Tail light/Cornering lights
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Joined: Aug 2011
Posts: 80
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this is my old thread about the problem... has some useful wiring diagrams
http://forums.corvetteforum.com/c4-t...hort-89-a.html
Last edited by Dynamo6969; Aug 29, 2012 at 10:26 AM. Reason: added my old thread
Thread Starter
Cruising
Joined: Aug 2012
Posts: 10
Likes: 0
From: Monmouth Maine
Just tested left front marker light. Kind of odd results. I'm guessing the tab near the top of the socket is the ground terminal, and the contact in the bottom of the socket is voltage. Is this correct?
When I check continuity from the top connector to ground at the battery or frame, there's none, but there's 12V! When I check for 12V or ground at the bottom connector there's none.
Same results when I hook up the negative terminal at the battery, and turn on just the tail/parking lights.
Now, when I depress the brake pedal, I loose the 12V at the top connector, and get 12V on the bottom connector!
There has to be a short somewhere. I'm going to keep checking the light and break wiring.
I guess the big question is why is there 12 V on any connector with the key and light switch off?
When I check continuity from the top connector to ground at the battery or frame, there's none, but there's 12V! When I check for 12V or ground at the bottom connector there's none.
Same results when I hook up the negative terminal at the battery, and turn on just the tail/parking lights.
Now, when I depress the brake pedal, I loose the 12V at the top connector, and get 12V on the bottom connector!
There has to be a short somewhere. I'm going to keep checking the light and break wiring.
I guess the big question is why is there 12 V on any connector with the key and light switch off?
Drifting
Joined: Jun 2010
Posts: 1,853
Likes: 8
From: Westerly RI
Just tested left front marker light. Kind of odd results. I'm guessing the tab near the top of the socket is the ground terminal, and the contact in the bottom of the socket is voltage. Is this correct?If it's a standard-type, push-and-turn-to-install, the entire socket is the ground. Is this an 1157 or 1034 bulb? If so, there are two filaments and two contacts on the bottom, one for parking and one for turn/hazard.
When I check continuity from the top connector to ground at the battery or frame, there's none, but there's 12V! When I check for 12V or ground at the bottom connector there's none.
Same results when I hook up the negative terminal at the battery, and turn on just the tail/parking lights.
Now, when I depress the brake pedal, I loose the 12V at the top connector, and get 12V on the bottom connector!Front or rear?
There has to be a short somewhere. I'm going to keep checking the light and break wiring.
I guess the big question is why is there 12 V on any connector with the key and light switch off?There should not be power to any exterior light with those two switches off.
When I check continuity from the top connector to ground at the battery or frame, there's none, but there's 12V! When I check for 12V or ground at the bottom connector there's none.
Same results when I hook up the negative terminal at the battery, and turn on just the tail/parking lights.
Now, when I depress the brake pedal, I loose the 12V at the top connector, and get 12V on the bottom connector!Front or rear?
There has to be a short somewhere. I'm going to keep checking the light and break wiring.
I guess the big question is why is there 12 V on any connector with the key and light switch off?There should not be power to any exterior light with those two switches off.
Thread Starter
Cruising
Joined: Aug 2012
Posts: 10
Likes: 0
From: Monmouth Maine
Hey everyone I just wanted to give a quick update. After a bunch of testing and looking further I found my turn signal flasher behind the passenger side middle dash. The outside of the flasher looked "burnt". Took a trip to Napa and bought a heavy duty flasher, installed it, it fixed both my turn signals so they actually work and my tail light fuse does not blow when I use the signals.
Thanks all for the info and help!
Thanks all for the info and help!
