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Message started by greenmonster on 02/09/18 at 12:26:35

Title: Tail Light Out
Post by greenmonster on 02/09/18 at 12:26:35

Hey folks,

As the title says, my tail light is out. I have a brake light, and the bulb is good. (tested that out with several known-to-be-good bulbs) When I check the voltage, I have good voltage coming to the tail light, using the socket as ground, but no light.

Does the tail light and brake light have different grounds?

Title: Re: Tail Light Out
Post by JOEL2014 on 02/09/18 at 13:04:24

071205050E0D0F0E13140512600 wrote:

Aren't the tail light and brake light the same bulb? One filament for the tail and one for the brake. If there's voltage in the socket, it would have to be the bulb. I have not checked mine in the bike, but that's how it is in my truck.

Title: Re: Tail Light Out
Post by joelite44 on 02/09/18 at 13:40:22

Mine had a non original key. What i do is partially insert the key before it bottoms out. Before this I would only get brake light.

Just turn the key while not putting it all the way in.

Title: Re: Tail Light Out
Post by greenmonster on 02/09/18 at 14:32:12

Joelite, are you talking about the ignition key?

Title: Re: Tail Light Out
Post by verslagen1 on 02/09/18 at 14:36:16

72777D7479767C7F74797C616B180 wrote:

Are you talking about the license plate light vs the brake/tail light?

Title: Re: Tail Light Out
Post by verslagen1 on 02/09/18 at 14:39:01

647166666D6E6C6D70776671030 wrote:

Did you check the contacts?

They do corrode.

Title: Re: Tail Light Out
Post by greenmonster on 02/09/18 at 14:52:37

I am referring to the tail/brake light. Yes, they are the same bulb. I checked the contacts, and they do not seem to be corroded.

Title: Re: Tail Light Out
Post by verslagen1 on 02/09/18 at 14:55:20

The contact plate is spring loaded.
and there's 2 little wires connecting them to the main wires.
could be broken inside.

Title: Re: Tail Light Out
Post by greenmonster on 02/09/18 at 15:05:11

So I don't know what changed from the last test I did until the test I did just 30 seconds ago. Now I have good signal on my brake light(12.5V), but almost nothing on my tail light(0.1V which could almost be residual) for voltage.

Sounds like a hinky wire. Anyone know which colour that one is?

Title: Re: Tail Light Out
Post by Johnny57 on 02/09/18 at 15:31:44

White/Black wire is brakelight. Black/White wire is ground. Brown wire is ignition power. (Your taillight). Brown wire will always be hot when your key is on.

Title: Re: Tail Light Out
Post by eau de sauvage on 02/09/18 at 22:04:59

FFIW, this is the best incandescent tail light, period. It has a much brighter stop/running ratio than any other bulb.

https://www.amazon.com/dp/B00BFDIN0K