Update on the No Start -- No no taillight - Steve Saunders Goldwing Forums

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post #1 of 3 (permalink) Old 04-17-2006, 09:41 PM Thread Starter
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Location: Roswell, NM, , USA
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Okay, its starts it runs, it goes around the block! and its charging.

Now the bad news. I can't get my taillight to work. I have 12V at the connector, but when I plug the taillight into the connector no light. I had to run a ground wire from the taillight to the battery negative but still no taillight. Same thing with the brakelight.

This is not a factory taillight but a "Tombstone" style taillight. The bulb is the same one the factory used. I don't have a decent electrical wiring diagram (the FSM is rather lacking on that particular point.


As I read this I am curious as to what the brown wire under the seat is for? Is that where I am supposed to ground the taillight?


Green/Yellow is stop.
Green is running.
Blue and Orangeare turnsignals.

What is brown?

1978 GL1000
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post #2 of 3 (permalink) Old 04-17-2006, 10:22 PM
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Location: Medford, County of Jackson, Oregon, USA
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On the 1100 the brown wire goes to the ignition switch. It's the lead for the tail light. The bulb has two filaments one for the tail light and one for the brake light, the Green/Yellow is the brake light and the green is ground. I'm pretty sure the 1000 uses the same color code. With a voltmeter - lead on the green wire or on a chassis ground and the + lead on the brown wire you should see 12V when the ignition switch is in the run position. Moving the + lead of the volt meter to the Green/Yellow wire you should have 12V when either brake control is operated.

With your aftermarket tail light unit you're going to have to identify which filament is brake and which is the tail light.

None at present
Past 'Wings: GL1100, GL1200, GL1500, GL1800

Current BMW C650GT
Paul W.
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post #3 of 3 (permalink) Old 04-17-2006, 11:12 PM Thread Starter
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It WORKS!!! Thanks for the insight about the brown wire.

1978 GL1000
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