Brake lights don't work - GL1800Riders

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post #1 of 20 (permalink) Old 04-07-2012, 07:08 PM Thread Starter
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Brake lights don't work

I took my bike (an '04) and participated in a bike safety class (which involved a lot of idling). About 3/4 of the way through my brake lights stopped working with either hand or foot brake. I checked the fuse and it looked okay, but I thought I'd stop on the way home and buy some new fuses just to be sure. I replaced all fuses (except for the two big ones at the bottom). Still no brake lights. Any suggestions? Where might the relay switches be located? Thanks for any help you can give me.

Tom
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post #2 of 20 (permalink) Old 04-07-2012, 07:54 PM
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The relay is under the seat, with a cover on all 3 banks of them. 2 screws hold the cover down and then the relay racks pop out by squeezing in on the tabs at the sides of the cover. Swap the brakelight relay with another one with the same legs and see if they work. If not, you need to check your turn signals to see if they work.

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post #3 of 20 (permalink) Old 04-07-2012, 08:37 PM
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Here is the part of the schematic that might help. I find it unlikely but very possible that both switches are bad. One could have went bad before today and you didn't notice until the other crapped out. You can short the wires together of either switch to eliminate them from the problem.


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post #4 of 20 (permalink) Old 04-07-2012, 08:48 PM Thread Starter
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Relay good, turn signals work

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Originally Posted by techdude2000 View Post
The relay is under the seat, with a cover on all 3 banks of them. 2 screws hold the cover down and then the relay racks pop out by squeezing in on the tabs at the sides of the cover. Swap the brakelight relay with another one with the same legs and see if they work. If not, you need to check your turn signals to see if they work.
Thanks for the reply. I swapped it with the horn relay. Horn worked, but no brake lights, so the relay is good. The turn signals work okay. Could it be a switch at the hand or foot which is taking the whole thing out? Tried to jump the wire at the front between the green & yellow and white/green with no luck.

Tom
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Rear: Michelin Primacy 195/55/16
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post #5 of 20 (permalink) Old 04-07-2012, 09:17 PM
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OK, just saw where you jumpered the switch at the lever. When you pull the lever can you hear or feel the brakelight relay click?

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post #6 of 20 (permalink) Old 04-08-2012, 07:35 AM Thread Starter
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Quote:
Originally Posted by techdude2000 View Post
OK, just saw where you jumpered the switch at the lever. When you pull the lever can you hear or feel the brakelight relay click?
Yes, I can hear the relay clicking when I pull the level and when I step on the foot pedal.

Tom
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post #7 of 20 (permalink) Old 04-08-2012, 08:24 AM
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Have you verified that all the brake lights are good? Long shot that all the brake lights are burned out, but it can happen...

Double check the large connector under you seat that connects all rear lighting to the bike. It is underbuilt by Honda, usual damage is the ground wire connection fries itself inside the connecter.

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post #8 of 20 (permalink) Old 04-08-2012, 08:57 AM
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Quote:
Originally Posted by tcdell View Post
Yes, I can hear the relay clicking when I pull the level and when I step on the foot pedal.
I had the same problem with mine. Check to see if your rear brake pedal needs adjusting. I bought a new relay and then found out it was just an adjustment

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post #9 of 20 (permalink) Old 04-08-2012, 10:27 AM
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Just got home from church, you probably have a bad connection in the C15 connector under the seat to the rear of the relay banks. Here's a picture of it, check the solid Green wire that grounds all of the rear lights as well as the Green/Red wire that carries the power to all the rear brakelights.


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post #10 of 20 (permalink) Old 04-08-2012, 11:11 AM
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Quote:
Originally Posted by pshivers View Post
Have you verified that all the brake lights are good? Long shot that all the brake lights are burned out, but it can happen...

Double check the large connector under you seat that connects all rear lighting to the bike. It is underbuilt by Honda, usual damage is the ground wire connection fries itself inside the connecter.
Quote:
Originally Posted by techdude2000 View Post
Just got home from church, you probably have a bad connection in the C15 connector under the seat to the rear of the relay banks. Here's a picture of it, check the solid Green wire that grounds all of the rear lights as well as the Green/Red wire that carries the power to all the rear brakelights.

I wish I had thought of that..... But then you did provide a pretty picture...


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A man should look for what is, and not for what he thinks should be...
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