1982 rear defog timer/relay
Thread Starter
Racer
Joined: Apr 2014
Posts: 406
Likes: 22
From: Lyons Colorado
1982 rear defog timer/relay
According to the factory service manual the timer is bad if the system operates but won't stay on for the full 15 minute cycle, in my case it only stays on for a second so I'm guessing I need one. But, they're apparently unobtainable for an '82, the only one that I can find is for an early '82. My guess is that it would be relatively easy to rewire if necessary but first I'd like to ask if anyone has run into this before?
Advanced
Joined: Feb 2013
Posts: 57
Likes: 5
From: Kingston, Ontario
According to the factory service manual the timer is bad if the system operates but won't stay on for the full 15 minute cycle, in my case it only stays on for a second so I'm guessing I need one. But, they're apparently unobtainable for an '82, the only one that I can find is for an early '82. My guess is that it would be relatively easy to rewire if necessary but first I'd like to ask if anyone has run into this before?
Thread Starter
Racer
Joined: Apr 2014
Posts: 406
Likes: 22
From: Lyons Colorado
I think my switch is fine, I just need to find the timer/relay. I may have to trace the wiring to find it. If it needs one it seems like it may be hard to find but if Cadillac used the same one and I can find mine and get the part number...
Safety Car
Joined: Mar 2007
Posts: 3,652
Likes: 49
From: Bridgewater nj
Rockauto.com is good for cross refer parts and sometimes getting a pic. The timer relay may have a mounting tab in a different spot than the corvette one or something simple like that but everything else will be the same. Good luck
PS check with all the venders first, they usually do this stuff all the time and a poor ground could kick that relay off early. Just thought of that.
PS check with all the venders first, they usually do this stuff all the time and a poor ground could kick that relay off early. Just thought of that.
Thread Starter
Racer
Joined: Apr 2014
Posts: 406
Likes: 22
From: Lyons Colorado
Still can't find the timer/relay, but the wiring diagram in the service manual isn't the same as my car. For example the diagram has a light blue wire going to the switch and in my car the switch only has a org/blk, purple, pink, and black. So I've got to figure out why the wiring diagram doesn't match my car.
Thread Starter
Racer
Joined: Apr 2014
Posts: 406
Likes: 22
From: Lyons Colorado
Ok I get it now, the service manual has 2 conflicting wiring diagrams. One has a switch and a timer relay, presumably left over from earlier cars. The other, and the one that my car has is a solid state timer built into the switch assembly. So I need a new switch.
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