Wiring harnesses for the Moto Guzzi 1000 S
To order, e-mail: [email protected]
Installation is eased with my instructions for the major electrical components.
Main harness for the 1000 S
Part Number | Description | Photo | Price |
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MG# 29747170 |
Main harness for the 1000 S (Series 1) Series 1 machines have the early dash. The 1000 S came equipped with variations in the charging system:
The 1000 S came equipped with variations in the ignition system:
Please let me know which variation you may have. I duplicated an original main harness. In construction, I use the same gauge of wire, the same colors and tracers (stripes), the same length and sheathing, the same terminals, etc. All terminals are of the double crimp, strain relief variety.
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USD $220.00 |
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MG# 29747171 |
Main harness for the 1000 S (Series 2) Series 2 machines have the later dash. The 1000 S came equipped with variations in the charging system:
The 1000 S came equipped with variations in the ignition system:
Please let me know which variation you may have. I duplicated an original main harness. In construction, I use the same gauge of wire, the same colors and tracers (stripes), the same length and sheathing, the same terminals, etc. All terminals are of the double crimp, strain relief variety.
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USD $220.00 |
Sub-harnesses for the 1000 S
Part Number | Description | Photo | Price |
---|---|---|---|
MG# 14715424 (ALT) |
Distributor to main harness - left side Connects the ignition points inside the distributor to the main harness (further connects to the negative terminal on the coil serving the left cylinder). A ring terminal is used for a more secure fitment inside the distributor. The green wire exits the distributor toward the rear of the motorcycle. |
USD $2.75 |
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MG# 14715425 (ALT) |
Distributor to main harness - right side Connects the ignition points inside the distributor to the main harness (further connects to the negative terminal on the coil serving the right cylinder). A ring terminal is used for a more secure fitment inside the distributor. The red wire exits the distributor toward the front of the motorcycle. |
USD $2.75 |
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MG# 28740533 |
Headlight bucket to headlight bulb Connects the terminals inside the headlight bucket to the headlight bulb. Includes wiring for the |
USD $13.25 |
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MG# 14747270 |
Main harness to dash (Series 1) Connects the main harness to the early dash. |
USD $90.00 |
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MG# 14747271 |
Main harness to dash (Series 2) Connects the main harness to the late dash. |
USD $90.00 |
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SAPRISA-VR-GROUND |
Ground wire for Saprisa voltage regulator [Saprisa charging system] Connect the body of the Saprisa voltage regulator to ground. |
USD $2.00 |
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MG# 29748550 |
Charging system ground Ground wire for the alternator and regulator wiring. Applicable to both the Saprisa and Ducati charging systems. Includes original 5 mm post to 6.3 mm male spade adapter. |
USD $2.50 |
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MG# 28747960 |
Battery cable - negative Connects the negative terminal on the battery to the grounding point on the frame. Cable is 6 AWG and is 230 mm (~9 inch) in total length. If you require something different, please let me know. Note: The original negative battery cable was made of a bare, braided material. It was quite flexible. This cable is much stiffer and not nearly as flexible. Please be certain this will work for you and your application. |
USD $10.00 |
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MG# 14759770 |
Brake fluid level to dash Connects the cap on the rear brake master cylinder to the dash harness. |
USD $6.00 |
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MG# 18759550 |
Brake fluid indicator to ground Connects the rear brake master cylinder to ground. |
USD $2.25 |
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MG# 29726450 |
Alternator to battery [Saprisa charging system] Connects the alterntaor plug to the positive terminal on the battery. Applicable to the Saprisa charging system. |
USD $6.25 |
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MG# 29725850 |
Alternator to voltage regulator [Saprisa charging system] Connects the alternator plug to the voltage regulator. Applicable to the Saprisa charging system. |
USD $7.25 |
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SAPRISA-ALTERNATOR |
Wires to solder directly to the Saprisa stator [Saprisa charging system] Replacement wires for the Saprisa charging system. Ready to solder directly to the stator. Applicable to the Saprisa charging system. |
USD $10.75 |
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MG# 30747310 |
Tail light Connects the main harness to the tail light. |
USD $17.25 |
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MG# 30743000 |
Fuse box Replacement fuse block with connections to main harness. Fuse block is of good quality. But, it is not original and the mounting holes do not align. It will fit nicely in the available space and you should be able to secure it in place using one of the two original mounting holes. Harvey Johnson used the original lower mounting hole on his Mille GT. Then, he used a short piece of aluminum flat stock to mount the fuse block diagonally to the original upper mounting hole as shown in the photos below. |
USD $35.75 |
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MG# 27749815 |
Front brake light switch Connect the dash harness to the front brake light switch. Includes a new switch. |
USD $15.25 |
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MG# 29722170 |
Digiplex ignition - early style with Molex connectors Wiring to support the Digiplex ignition system. Includes corresponding terminals and connector plugs for the electronic ignition modules and distributor pick-up. |
USD $27.25 |
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MG# 29722170-LATE |
Digiplex ignition - late style with 11-pin flat connector, relay socket, and AMP Superseal connectors Wiring to support the Digiplex ignition system. Please note, the 11-pin flat connector is no longer available. You will need to reuse your existing connector. If you ship me your original harness, I will be happy to remove the old terminals and fit the new terminals. |
USD $83.25 |
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MG# 28712500 |
Voltage regulator to main harness [Saprisa charging system] Connects the voltage regulator to the main harness. Applicable to the Saprisa charging system. Note: The original Saprisa plug is *NOT* included. You will need to re-use your original plug or source a replacement. The photos below show how and where to insert each wire. |
USD $4.75 |
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MG# 14748450 |
Battery cable - positive Connects the positive terminal on the battery to the starter. Cable is 6 AWG and is 400 mm (~15 3⁄4 inch in) in total length. If you require something different, please let me know. Replaces MG# 14748400. Includes rubber cover for the terminal located at the starter solenoid (MG# 12703000). |
USD $14.75 |
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MG# 29726461 |
Voltage regulator to battery positive [Ducati charging system] Connects the voltage regulator to the battery positive terminal. Applicable to the Ducati charging system. I am not yet able to reproduce this harness. |
USD $0.00 |
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MG# 29727551 |
Voltage regulator to main harness [Ducati charging system] Connects the voltage regulator to the main harness. Applicable to the Ducati charging system. I am not yet able to reproduce this harness. |
USD $0.00 |
Custom Sub-Harnesses
Part Number | Description | Photo | Price |
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SWITCH-TONTI |
Multifunction handlebar switch pre-wired for Moto Guzzi Tonti models After 10 years of building Moto Guzzi harnesses and supporting my customers, I have learned that people experience the most frustration and challenges when attempting to wire the left handlebar switch (by far). To help alleviate these issues, I am now offering this brand new switch with period appearance. The switch features a metal body and fits 22 mm (7⁄8 inch) handlebars. It is pre-wired so that you can mount it on your handlebar and plug in the wires quickly and easily. I chose this switch because of its functionality, size, and appearance. While it does not boast all of the features and functions of a modern switch, it is a good basic switch that is appropriate to the Tonti frames. I use a switch like this on my personal Ambassador and I find it easy to use and my thumb operates all of the controls with ease. As with all handlebar switches, I strongly recommend the use of relays for the headlight circuit. I have an excellent relay solution available for purchase.
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USD $85.00 |
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RELAY-HARNESS-TONTI |
Relay solution for the coils, headlight high beam, and headlight low beam No more excuses! Relays greatly improve the performance of the coils and headlight. Your coils will get all the amperage they require, and your headlights will burn brighter when you use relays. Relays also dramatically extend the life of your handlebar switches. This relay kit is a well thought-out and solid solution that is in line with what I believe Lino Tonti might have designed. A few points I'll mention:
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USD $72.25 |
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KS-TO-MOLEX |
Easy K&S makes a variety of good quality, affordable handlebar switches that are popular replacements for the original switch gear. The K&S 12-0030 is one popular model. No more need to fiddle with butt connectors, soldering, or heat shrink. Just plug the 9-pin connector into the plug that came with your K&S switch, and the other end into the 12-pin connector on the back of your headlight shell. Made specifically to support the 850 T, 850 T3, V1000 I-Convert, V1000 G5, 1000 SP, Le Mans, Le Mans III, and other such models. If in doubt as to whether it will work with your model, just ask. I am happy to build to suit your Guzzi. Please note: Some original handlebar switches were grounded through the handlebar. Other original switches were grounded through the Molex 12-pin connector. If needed for your application, a separate ground wire will be provided for use inside the headlight shell. Simply fit it in position 3 of the 12-pin Molex plug inside the headlight shell (position 1 has a red/black wire). Connect the other end with the piggyback terminal to the ground location inside the headlight shell. When ordering: Please specify specific K&S switch you are using and the total length needed. |
USD $20.00 |
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MOLEX-TO-MOLEX-LEFT |
Easy Aftermarket switches sometimes use Molex plugs. Generally, the plugs used do not match the Guzzi size or pin configuration. Tomaselli and Domino switches sometimes fall into this category. No more need to fiddle with butt connectors, soldering, or heat shrink. Just plug the Molex connector into the plug that came with your aftermarket switch, and the other end into the 12-pin connector on the back of your headlight shell. Made specifically to support the 850 T, 850 T3, V1000 I-Convert, V1000 G5, 1000 SP, Le Mans, Le Mans III, and other such models. If in doubt as to whether it will work with your model, just ask. I am happy to build to suit your Guzzi. Please note: Some original handlebar switches were grounded through the handlebar. Other original switches were grounded through the Molex 12-pin connector. If needed for your application, a separate ground wire will be provided for use inside the headlight shell. Simply fit it in position 3 of the 12-pin Molex plug inside the headlight shell (position 1 has a red/black wire). Connect the other end with the piggyback terminal to the ground location inside the headlight shell. When ordering: Please specify the aftermarket switch you are using and the total length needed. |
USD $20.00 |
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DOMINO-HORN-RELAY-PLUG |
Relay and needed wiring to operate the horns using positive current (instead of the original Guzzi handlebar switch that provided the ground for the horns). The Domino handlebar switch actuates the horns using positive current whereas the original Guzzi switch actuated the horn by providing a ground. This sub-harness replaces the relay under the fuel tank with a new relay and provides the necessary wiring to actuate the horns. Installation instructions:
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USD $26.00 |
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MOLEX-TO-MOLEX-RIGHT |
Easy Aftermarket switches sometimes use Molex plugs. Generally, the plugs used do not match the Guzzi size or pin configuration. Tomaselli and Domino switches sometimes fall into this category. No more need to fiddle with butt connectors, soldering, or heat shrink. Just plug the Molex connector into the plug that came with your aftermarket switch, and the other end into the 12-pin connector on the back of your headlight shell. Made specifically to support the 850 T, 850 T3, V1000 I-Convert, V1000 G5, 1000 SP, Le Mans, Le Mans III, and other such models. If in doubt as to whether it will work with your model, just ask. I am happy to build to suit your Guzzi. Please note: Some original handlebar switches were grounded through the handlebar. Other original switches were grounded through the Molex 4-pin connector. A separate ground wire is provided if needed for your application. When ordering: Please specify the aftermarket switch you are using and the total length needed. |
USD $8.00 |
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MOLEX-3 |
3 terminal Molex plug and 3 male terminals Useful for installing on a universal right handlebar switch. |
USD $1.75 |
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MOLEX-4 |
4 terminal Molex plug and 4 male terminals Useful for installing on a universal right handlebar switch. |
USD $2.50 |
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MOLEX-12 |
12 terminal Molex plug and 12 male terminals Useful for installing on a universal left handlebar switch. |
USD $6.25 |
Components
Part Number | Description | Photo | Price |
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MG# 12702900 |
Rubber boot/cover for small wire terminals. Intended to cover smaller wires with ring terminals. Sold each. |
USD $2.50 |
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MG# 12703000 |
Rubber boot/cover for battery cables. Intended to cover the terminal located at the starter solenoid. Not suitable for fitment at battery terminals. Sold each. |
USD $2.50 |
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MG# 12735100 |
Rubber boot/cover for starter button and disc brake light switches. Intended to cover the starter button used on the V7 Sport and 750 S. Also applicable to the front and rear brake light switches on disc brake models. Sold each.
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USD $2.50 |
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MG# 90706765 |
O-ring to seal the large, 100 mm speedometer to the dash. This O-ring seals the speedometer to the dash. |
USD $2.00 |
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MG# 90706746 |
Set of two O-rings to seal the smaller, 80 mm speedometer and tachometer to the dash. These O-rings seal each gauge to the dash. |
USD $4.00 |
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MG# 93400964 |
4 connection female spade connector A great way to connect four wires without the need for male spade terminals (Moto Guzzi typically did not use male spade terminals on wiring harnesses). Accepts 6.3 mm (1⁄4 inch) terminals. Sold each. Best to use a needle-nosed pair of pliers to insert and remove terminals. |
USD $8.00 |
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MG# 93400863 MG# 93400963 |
3 connection female spade connector A great way to split power to two devices such as driving lights, front and rear turn signals, etc. ( Best to use a needle-nosed pair of pliers to insert and remove terminals.
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USD $6.00 |
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MG# 93400962 |
2 connection female spade connector A great way to connect two wires without the need for male spade terminals (Moto Guzzi typically did not use male spade terminals on wiring harnesses). These are used on the Tonti framed models ( |
USD $3.00 |
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BULLET-CONNECTOR |
2 connection bullet connector A great way to connect two male bullet terminals (double bullet connector). Accepts 4 mm (0.157 inch) terminals. Sold each. |
USD $0.50 |
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BULB-HOLDER-SINGLE |
Single terminal bulb holder A very nice single terminal bulb holder with excellent fitment within the
When ordering: Please specify wire color and terminal. |
USD $7.50 |
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BULB-HOLDER-DUAL |
Dual terminal bulb holder A great replacement dual terminal bulb holder and very close to the original in design. Accepts two 6.35 mm female spade terminals, just like the original. Excellent fitment within the
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USD $5.00 |
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MG# 17760650 MG# 14768650 MG# 10754905 |
Dual terminal bulb holder A great replacement dual terminal bulb holder and very close to the original in design. Accepts two 6.35 mm female spade terminals, just like the original. Excellent fitment within the
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USD $5.00 |
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MG# 93450322 MG# 93450122 |
Light bulb for gauge and indicator lights 3.36 watt lamp, bayonet base, 500 hour average life, approximately 10 mm (0.41 inch) in diameter. Sold each. Note: The MG# 93450322 bulbs are longer in overall length, but brighter than MG# 10744910. In general, I recommend MG# 93450322 because they are brighter and easier to see. If you know that your dash requires a shorter bulb, please order MG# 10744910.
This bulb may also be used as a |
USD $0.75 |
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MG# 10744910 |
Light bulb for gauge and indicator lights 1.728 watt lamp, bayonet base, 1000 hour average life, approximately 10 mm (0.41 inch) in diameter. Sold each. Note: The MG# 93450322 bulbs are longer in overall length, but brighter than MG# 10744910. In general, I recommend MG# 93450322 because they are brighter and easier to see. If you know that your dash requires a shorter bulb, please order MG# 10744910.
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USD $0.75 |
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MG# 14744910 |
Light bulb for indicator lights 2 watt lamp, bayonet base, 1000 hour average life, approximately 7 mm (0.28 inch) in diameter. Sold each.
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USD $1.50 |
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MG# 93450224 |
Light bulb for tail light Long life bulb to help prevent failure due to vibration (1157LL), dual element, 26.88 / 8.26 watt lamp, bayonet base, 2400 / 10000 hour average life. Sold each.
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USD $1.50 |
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MG# 93450129 |
Light bulb for turn signals and parking lights Long life bulb to help prevent failure due to vibration (1156LL), single element, 26.88 watt lamp, bayonet base, 2400 hour average life. Sold each.
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USD $1.50 |
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MG# 17762150MG# 93450120 |
Light bulb for gauge and indicator lights 3.78 watt lamp, wedge base, 2500 hour average life, approximately 10 mm (0.41 inch) in diameter. Sold each.
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USD $0.75 |
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MG# 93450140 |
Light bulb for indicator lights 1.40 watt lamp, wedge base, 500 hour average life, approximately 5 mm (0.23 inch) in diameter. Sold each.
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USD $0.75 |
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MG# 12734900 |
Starter button bracket Bracket to fit the original starter button (22 mm diameter mounting hole). Stainless steel. Very nice. Starter button sold separately. Sold each. |
USD $15.50 |
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MG# 26735001 |
Starter button Momentary push button switch to actuate the starter. Fits the original bracket perfectly (22 mm diameter mounting hole) and comes complete with set screw terminals just like the original. Sturdy metal housing and nice quality black plastic securing nut. Sold each.
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USD $20.00 |
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MG# 26735001-BLACK |
Starter button Momentary push button switch to actuate the starter. Fits the original bracket perfectly (22 mm diameter mounting hole) and comes complete with set screw terminals just like the original. Nice quality black plastic housing and securing nut. Sold each.
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USD $14.00 |
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MG# 14746500 |
Front distribution panel High quality replacement front distribution panel as originally fit to the Moto Guzzi V7 Sport and 750 S. Provides five connections (ten terminals total), just like the original. Bolts into the original location on the frame under the fuel tank using the original 5 mm fasteners. Sold each.
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USD $25.00 |
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MG# 17743000 |
Original fuse block New production, very good quality fuse box. Accepts six fuses (MG# 17742550 or MG# 12742500). Comes with clear cover and two jumpers. Additional jumpers available. Sold each.
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USD $42.00 |
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MG# 17743000-JUMPER |
Jumper for original fuse block Jumper connection used to join multiple fuse circuits. Fits the original fuse box. Sold each.
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USD $1.50 |
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MG# 12742500 |
25 amp fuse Original style fuse to fit the original fuse block. Sold each.
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USD $0.50 |
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MG# 17742550 |
16 amp fuse Original style fuse to fit the original fuse block. Sold each.
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USD $0.50 |
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MG# 28743060 |
Fuse holder Single fuse holder that may be connected to other single fuse holders to form a row. Sold each. Fuses sold separately.
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USD $2.50 |
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MG# 28742560 |
15 amp ATO / ATC fuse As used on many modern Guzzis accepting blade style fuses. Sold each.
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USD $0.25 |
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POST-TO-SPADE-ADAPTER |
5 mm post to 6.3 mm male spade adapter ~5 mm diameter hole permits fitment to the neutral switch and dash grounding points (as original). One required per neutral switch. Dash usage varies by model. Sold each.
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USD $0.50 |
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MG# 13741640-LED |
Bracket for mounting LED turn signal flashers Designed specifically for LED flashers that are rubber mounted. Mounting hole is 7 mm in diameter. Sold each. |
USD $3.00 |
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MG# 13741640 |
Bracket for mounting turn signal flashers Fits standard sized round thermal and electronic flashers. Mounting hole is 6 mm in diameter. Sold each. |
USD $3.00 |
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MG# 12745760 |
Push-pull switch Good quality switch with screw-type terminals. 25 amp capacity. 8 mm × 1 mm threads. Knob unscrews for fitment. Sold each. |
USD $5.00 |
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MG# 12734900ALT |
Bracket for push-pull switch This bracket is identical to the starter button bracket, except the hole is ~8 mm in diameter. The intent is to mount this bracket on the left clutch perch, mirroring the starter button bracket. Then, a push-pull switch may be fit to the bracket and used to conveniently actuate spot lights or other electrical components. Stainless steel. Very nice. Push-pull switch sold separately. Sold each. |
USD $15.50 |
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MG# 13745740 MG# 17745760 MG# 18745701 |
Toggle switch Excellent quality SEALED switch with six quick connect terminals (as original). 15 amp capacity, on-on double pole double throw, comes complete with mounting hardware (as shown). Sold each.
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USD $18.50 |
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TOGGLE-BOOT |
Half height toggle switch boot Half-height boot for the toggle switch. Uses standard 15⁄32-32 inch threads. Be sure to rotate the toggle with the boot when fitting the boot to the switch. Sold each.
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USD $4.50 |
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TOGGLE-BOOT-FULL |
Full height toggle switch boot Full-height boot for the toggle switch. Uses standard 15⁄32-32 inch threads. Be sure to rotate the toggle with the boot when fitting the boot to the switch. Sold each.
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USD $4.00 |
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MG# 12732500 |
5 pin mini relay (SPDT) with mounting bracket. 40 amp rating. Sealed construction. Resistor is used across the coil terminals for long life and reliable service. 40 amp maximum continuous current rating on the normally open circuit. 30 amp maximum continuous current rating on the normally closed circuit. Great replacement for the starter relay or for use with custom functions. Mounting bracket has a 5.5 mm diameter hole. Sold each.
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USD $5.00 |
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MG# 28732560 |
5 pin mini relay (SPDT) without mounting bracket. 40 amp rating. Great replacement for the starter relay or for use with custom functions. Sold each.
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USD $5.00 |
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MG# 30732510 |
5 pin mini relay (SPST) without mounting bracket. Sealed construction. 40 amp maximum continuous current rating. So far, the only Guzzi I know of that requires this relay is the 1000 S series 2 with the later Digiplex ignition module. As far as I know, all other applications should use MG# 28732560. Sold each.
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USD $7.50 |
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MG# 30732560 |
5 pin micro relay (SPDT) without mounting bracket. 30 amp rating. Sealed construction. Resistor is used across the coil terminals for long life and reliable service. 30 amp maximum continuous current rating on the normally open circuit. 20 amp maximum continuous current rating on the normally closed circuit. Used on many later Guzzis. Fits my custom relay solution. Great for use with custom functions. Sold each. |
USD $5.00 |