Headlights aren't working on my Z28... please help me!
#22
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I've tried disconnecting the diode network and the high beam switch, but the headlights still don't work.
#24
Very interesting! Great pictures. Do you see evidence of a circuit breaker in there? It looks pretty basic to me. I wonder if its hidden deeper in one of the two parts you separated?
Where did you find your Camaro diode module? (I want to go tear my dash apart.) Its pretty basic and it must be there so the diodes can be easily replaced if they burn out. The book doesn't have any schematics of the diode network and what its connected to. (It only shows that its there and that the hot yellow wire going to it - but there must be more!) Its so basic - really have no idea what it could be there for. It must isolate the headlight circuit from shorts, etc. in other related circuits. Very curious....
Where did you find your Camaro diode module? (I want to go tear my dash apart.) Its pretty basic and it must be there so the diodes can be easily replaced if they burn out. The book doesn't have any schematics of the diode network and what its connected to. (It only shows that its there and that the hot yellow wire going to it - but there must be more!) Its so basic - really have no idea what it could be there for. It must isolate the headlight circuit from shorts, etc. in other related circuits. Very curious....
#25
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Where did you find your Camaro diode module? (I want to go tear my dash apart.) Its pretty basic and it must be there so the diodes can be easily replaced if they burn out. The book doesn't have any schematics of the diode network and what its connected to. (It only shows that its there and that the hot yellow wire going to it - but there must be more!) Its so basic - really have no idea what it could be there for. It must isolate the headlight circuit from shorts, etc. in other related circuits. Very curious....
#27
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I tested the voltage at the headlights: 0.14 volts on each wire (the positive wire and the ground wire for each bulb). I only get this reading for 1 second every 3 seconds (due to the breaker inside the headlight switch constantly disconnecting and reconnecting). So the reading alternated between 0.14 volts and 0 volts. I checked the voltage of one of the positive wires at the battery junction block and it was a normal 12.48 volts.
By the way, now the headlights don't even light up at all, it's been like this for a few days... they were very, very weak before.
Also, I tried swapping all 4 headlight bulbs for new ones (just in case, since I had them as spares), and it didn't solve the problem.
I'm waiting for my short circuit finder to arrive in the mail.
#28
too bad you didn't have a friend or person with the same car,,, try there switch. It kinda looks burnt out or worn in the 1st pic on the right side of the contacts. New or used switch shouldn't be more then $50
#30
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But you have an US-specs car car, right? I think that the diode network is not present on US-specs F-bodies, it's just on some exports. I've looked again at the thread where I got my photos of the diode network from, they are from a 1994 GMC 1500 pickup... I originally presumed it was a US car, but looking again at the thread I've noticed that the truck owner is from Alberta, Canada... so maybe that diode network is only on export GM cars?
#31
But you have an US-specs car car, right? I think that the diode network is not present on US-specs F-bodies, it's just on some exports. I've looked again at the thread where I got my photos of the diode network from, they are from a 1994 GMC 1500 pickup... I originally presumed it was a US car, but looking again at the thread I've noticed that the truck owner is from Alberta, Canada... so maybe that diode network is only on export GM cars?
#34
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Now the weird thing about it is that the short didn't blew the amp's fuse near the battery. I don't understand either how a short in the amp wiring can affect the headlights, with all the rest of the electrics, electronics etc. working just fine. I guess the headlights are what draws most current and the electrical system just couldn't cope with it. Weird.
In any case a big thank you to all of you guys, especially wssix99, you've been of great help!