Paul.Ebach

Hello I have just got my corvette back from paint and before I put the rear tail light lens back on I checked lights and turn signals etc... The passenger side rear turn signal is not working. I have changed the light bulb with a known good one still not working. Hazard lights flash only driver side and front lamps. I turn on headlamps and that rear element lights. When I turn on the turn signal the dash indicator lights solid (no flashing) and no light in the back passenger lamp. If I look close at the front lamp it is extremely dim and solid. The sockets are clean with no paint and corrosion. Do the wires run along the side where the door thresholds are. Just trying to see if maybe a wire is pinched. Everything worked fine before the paint job.
Paul
This was posted in General but I guess here might be better.

Alan 71

Hi P.E,
The rear lighting harness runs along the left rocker channel under the carpet and just to the inside of the sill plate.
The sill plate needs to be removed to access the harness.
Back at the lights…are all the grounds connected? I believe there's one at each light. The ground forms a 'string' from light to light.
Regards,
Alan

Paul.Ebach

Alan, I checked and the grounds are all there. I will have to check the wires running up the left (drivers side?). It sounds like a screw could not nick a wire putting the sill plate on? It is acting like a burned out bulb. I don't know what else to check. It is just strange before the painter no problem and now no turn signal.
Paul

Paul.Ebach

Anyone else with stuff to try?

0Willcox Corvette

I think I would double check the parking lamp connection to the main harness. It's pretty common for the ground to not make contact and then back feed. I feel sure you have a ground issue. You could up-plug the parking lamp and insert a test lamp in it's place. Use the light blue and black wires (lh side) and the dark blue and black (rh side). (the brown wire is the parking lamp)

If that's not the case I'd then pull the lens and bulb out of the tail lamp and with test light, test the brass in the housing is a good ground. If you don't have a good ground on the brass then touch the housing stud.

If you have done the above then the next place I would check would be the turn signal switch connector. Make sure it's plugged in nice and tight.

Willcox

Paul.Ebach

Where is the parking lamp connection to the main harness? Steering column? front to bach disconnect? BTW where is the front to back disconnect located? I will try all the above.

Peterbuilt

If that's not the case I'd then pull the lens and bulb out of the tail lamp and with test light, test the brass in the housing is a good ground. If you don't have a good ground on the brass then touch the housing stud.

Many times the connection where the black wire goes into the brass light socket corrodes and you loose the ground. Here's a way to check.




Connect a wire to a good ground and touch the brass and see if the bulb lights up.

Paul.Ebach

I verified a good ground and used a multimeter to check it. I even disconnected the ground and checked for corrosion as well as in the light socket. I will be bringing home a power supply and apply 12 vdc to the dark green wire at the connector at the base of the steering column is.

Anyone know where the front to back diconnect connector is located?

Peterbuilt

Checking if you have 12 volts at both sides of the harmonica connection might fix your open circuit.

The next connection might be at #3.

Paul.Ebach

My lights are ALL working now thanks to Willcox Corvette's diagram. It ended up being the connector under the dash. I unpluged it to put 12volts on it and I told myself that I needed to check what is not working and what is working first. So I plugged the connector back together and started with the Hazard lights and they worked so with those working the turn signal should too. Sure enough I tried the turn signal and they worked. The painter must have kicked the connector getting in and out of the car. Everyone thanks for all the help.

0Willcox Corvette

Sweet.. Glad you got it fixed!

Have a happy Thanksgiving.

Willcox