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Never seen this one. 1976 Corvette. All my parking lights, running lights, headlights, brakelights work...
Right turn signal does not blink.
and here's the strange part:
brake lights work fine, unless the headlights are on. The right brake/running lights go completely off when the brake is pressed, but again, only the right side, only when headlights on. Both brake lights work when the headlights are off, but my wife did notice that the right is not as bright as the left.
Ideas?
Last edited by Dawgbroke; Mar 31, 2018 at 04:24 PM.
I changed the bulb, It is the correct 1157... but I'll check if it's the wrong way.
Wasn't aware there was a right/wrong way.
Thanks for the replies.
PJ
It may be a ground problem. those sockets have a ground connection that corrodes and rusts causing problems. To check the ground, just remove the socket with the bulb still installed and touch the brass edge of the bulb with a grounded wire to see if the bulb brightness changes.
2025 c3 ('74-'82) of the Year Finalist - Unmodified
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Originally Posted by '75
It may be a ground problem. those sockets have a ground connection that corrodes and rusts causing problems. To check the ground, just remove the socket with the bulb still installed and touch the brass edge of the bulb with a grounded wire to see if the bulb brightness changes.
This sounds like the point to start from, which was just what I was looking for. I'm out of town for a few days, so I won't be able to check, but REALLY appreciate the pointers.
I feel it is a ground issue as well, just needed a place to start looking.
PJ
The light is grounding itself through the other bulb filament and then to the other bulbs that are connected to that wire. During the day, the brake and signal is duller because you're actually seeing the tail light filament instead of the proper turn/brake light filament.
During night, the light goes off because when power is applied to both the tail and turn/brake filaments there is no no path for power to flow through a filament and make it light. Every part of the bulb has 12V applied so it can't light.
If you find it's the socket and replace it, test it temporarily before making the wire connections permanent. It's become too common for parts store sockets to have wire colors that match the GM wires, but do a different function. In other words, if you match wire colors the tail light filament might be used for brake/turn and the brake/turn filament used for the tail light. It would at first seem to work OK except you can't see the brake/turn light with the headlights on.
Just want to thank all for this. It was the socket. Light was in correctly, but the ground was bad. Replaced the socket and all is good.
Thanks again.
PJ
I don't see a resolution to this problem
I know before the for t and rear bumpers were replaced all lights worked
It is a 1976 corvette .
I have checked wires at rear under car . All appear to be hooked up
what I have tested . checked watt the fuses with a test light .
Disconnected the brame light switch jumped the orange wires to the white. No lights I pulled the light bulbs new 1157. And tested the sockets with a test light have power tested with a DMV . 12 volts put 1 bulb in no power no voltage at either light socket
the turn/ marker back up lights all work front and side maker/turn work .
I replaced the turn signal switch .
Still no brake or hazards .
I found a large ground wire at front drivers side not hooked up I ran out.of time to hook it up I cleaned the wire and a spot touched it to the bare metal ..no flashers and tried brake lights with a pry bar to hold pedal down no brake lights
this is driving me insane . Any help would be appreciated . in advance .
They ground on the inside of the socket I will give it a shot on sat when I have some time .
tail lights work brake lights don't . I will try the ground from the rear frame this weekend I hope it's that easy lol should b
Hi all, this may be a long shot, but could someone please show me with an image where's the fuse to turn off the day time running lights? My expertise level with Corvette is still quite limited and one of the pending requirements to pass local inspection here is to ensure these are not on. Thanks!
You're responding to a 3 year old post in the C3 section (no DRL's here).
You should start a new thread in the C5 section.
It don't matter if someone responds to an old thread. There are no time limits on them. If there was they would be taken down. So more input the better. And people read them to learn about their car. And how to fix them based on others experiences. I KNOW I HAVE!!!
Very Strange electrical problem
