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-   -   One tail light is brighter than the other, why? (https://67-72chevytrucks.com/vboard/showthread.php?t=416594)

Piece of Work 08-14-2010 06:13 PM

One tail light is brighter than the other, why?
 
My right tail light is brighter than the left. I have switched bulbs and the wiring looks good. Any ideas on the cause?

Palf70Step 08-14-2010 06:23 PM

Re: One tail light is brighter than the other, why?
 
Sounds like a ground issue.

Piece of Work 08-14-2010 06:26 PM

Re: One tail light is brighter than the other, why?
 
I was afraid of that. Back through the wiring I go! Maybe I'll just put ground straps everywhere.

panda68 08-14-2010 06:38 PM

Re: One tail light is brighter than the other, why?
 
i would reccomend checking all the grounds for rust. take a piece of sandpaper and make sure everythings metal to metal.

GruntMoanCough 08-14-2010 06:38 PM

Re: One tail light is brighter than the other, why?
 
Any chance the tail light wire and the stop/turn light wire are crossed?

vectorit 08-14-2010 06:47 PM

Re: One tail light is brighter than the other, why?
 
Yep, poor ground on the dim one.
For kicks, take a scrap piece of wire that is long enough to reach a known good ground and connect it to your tail light bucket. You will see it brighten right up!

Ask me how I know this... :lol:

leddzepp 08-14-2010 06:53 PM

Re: One tail light is brighter than the other, why?
 
Poor ground, I had the same issue.

Piece of Work 08-14-2010 08:20 PM

Re: One tail light is brighter than the other, why?
 
Quote:

Originally Posted by vectorit (Post 4139192)
Yep, poor ground on the dim one.
For kicks, take a scrap piece of wire that is long enough to reach a known good ground and connect it to your tail light bucket. You will see it brighten right up!

Ask me how I know this... :lol:

I thought I was the dim one.;)

Hottrucks 08-14-2010 08:35 PM

Re: One tail light is brighter than the other, why?
 
Umm is the bulb in the socket backwards???

Piece of Work 08-14-2010 08:47 PM

Re: One tail light is brighter than the other, why?
 
Quote:

Originally Posted by Hottrucks (Post 4139360)
Umm is the bulb in the socket backwards???

No, I have tried new bulbs and swapping left and right. I'm going to check the grounds tomorrow.

Mike J 08-14-2010 09:10 PM

Re: One tail light is brighter than the other, why?
 
yep, mine are like that as well (left is brighter than right) - and everything back there is brand new except for the bedside lol! - has to be bad ground

bradley7576 08-15-2010 12:02 AM

Re: One tail light is brighter than the other, why?
 
make sure the bed of the truck is bolted down good i just went through this about 2 weeks ago.

cdowns 08-15-2010 07:08 AM

Re: One tail light is brighter than the other, why?
 
take light bucket out clean to bare shiny metal where the bucket mates to bed coat with dielectric grease and reassemble// a ground strap from bedsill to frame crossmember is a good addition

Piece of Work 08-15-2010 11:21 AM

Re: One tail light is brighter than the other, why?
 
Thanks for all the replies! It was a simple ground problem, no more dim bulb.

Longhorn Man 08-15-2010 11:23 AM

Re: One tail light is brighter than the other, why?
 
moved to the electrical forum


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