TailLight Problem :(

[SmileB44Death]

Here's the thing my break lights work my turn signals work but my running tailights don't work and the right license plates light doesn't work but the left one does. Does anyone know what's going on? And does anyone have the electrical diagram for the rear end?

 

[05Single]

What steps have you taken to trouble shoot it ?
Check fuse? Replace bulbs? Traced wires?
If one plate bulb works the other should. So at least that one is either a bad bulb or cut wire.

 

[M1Gunner]

Well here’s the thing. The stop tail and license plate lamps all share a common ground, therefor you can go ahead and cross the ground off bc it’s good. The right plate lamp and running light run on the same power supply BUT the left running lamp is on a seperate circuit.

Have you checked/replaced the bulbs? It wouldn’t be unusual for the running lamp side of those dual filament bulbs to give up the ghost but the brake lamps still work and the license plate bulb may just been out and you didn’t realize that until the rest?

Is your 3rd brake light still operational?

Here’s part of the schematics to show you they’re not on the same circuit.

 

[M1Gunner]

What steps have you taken to trouble shoot it ?
Check fuse? Replace bulbs? Traced wires?
If one plate bulb works the other should. So at least that one is either a bad bulb or cut wire.

Left and Right license plate lamps are on seperate circuits

 

[05Single]

Left and Right license plate lamps are on seperate circuits

Wtf really ? Leave it to gm to make things difficult.

 

[M1Gunner]

Hey just be thankful they aren’t Chrysler... lol

 

[05Single]

Hey just be thankful they aren’t Chrysler... lol

I have chrysler....well fiat technically

 

[M1Gunner]

HA, Well this just got awkward...

 

[HiHoeSilver]

Just to add to the confusion, most GM assembly line robots are made by Fiat.

 

[05Single]

 

[M1Gunner]

Just to add to the confusion, most GM assembly line robots are made by Fiat.

lol debatable! Robotics have nothing to do with engineering wiring harnesses! Hahaha that has nothing to do with our beautiful hoes.

 

[05Single]

Let's not forget all the robot components are made from china

 

[SmileB44Death]

I didn’t know people replied but thangs for your attention and I’ve replaced the license plate bulb I still have this problem. But the thing is my tailights

 

[M1Gunner]

I didn’t know people replied but thangs for your attention and I’ve replaced the license plate bulb I still have this problem. But the thing is my tailights

Does the 3rd brake light work when you apply the brake pedal?

 

[SmileB44Death]

Does the 3rd brake light work when you apply the brake pedal?

Yes it works

 

[M1Gunner]

Ok bare with me through this. Do your front park/turn signal lamps work?

 

[SmileB44Death]

Ok bare with me through this. Do your front park/turn signal lamps work?

Yes

 

[jmm121783]

Here's the thing my break lights work my turn signals work but my running tailights don't work and the right license plates light doesn't work but the left one does. Does anyone know what's going on? And does anyone have the electrical diagram for the rear end?

I just had the same issue and I ran a line from the passenger side harness to get my running lamps working...super simple and affective. There must be an issue where the chassis harness Ys into the seperate tail lights

 

[SmileB44Death]

I just had the same issue and I ran a line from the passenger side harness to get my running lamps working...super simple and affective. There must be an issue where the chassis harness Ys into the seperate tail lights

Could you help me out I’m a visual learner so could u be kind enough to send me a video that would be really helpful @2069540414

 

[Doubeleive]

it has been my experience that the contacts will get funky and sometimes even melt the plastic a little from the heat, I would take a good look at the contacts and be sure the bulb(s) are good, sometimes part of the bulb will burn out if it is a 2 filament, if the contacts have any black buildup (residue) try cleaning them first and bending them in a little so they have a good firm contact, my license plate bulb was flickering recently and I just cleaned it up and tweaked the contacts a hair and works perfect again. but I have had to replace the end harness before because it was just shot, on all these gm's there is end harness under the rear bumper (directly under the left/right sides) that feeds up to the lights it can be replaced by just unplugging it and plugging in a new one if need be.