2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Idiot light problem

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Old Sep 23, 2002 | 01:26 AM
  #1  
DC350's Avatar
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Idiot light problem

My other idiot light cluster...didn't work, so i got a new one with a workin clock. When i turn the ignition to "on" non of the lights come on, very rarely will i see a light come on. One night, it was the gas light. But the clock always works. Does anyone knnow what i could do? Cause i read some other posts, and i really want the lights to work!

Thanks boys

Evan
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Old Sep 23, 2002 | 11:29 AM
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DC350's Avatar
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.
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Old Sep 23, 2002 | 12:14 PM
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Following was written by Hailers:
Either a broken wire from the Alternator to the CPU or a bad solder joint on the connector (jack) at the CPU.

Attached is a jpg of the circuit. Check that wire is connected to the alternator (small two socket plug) and that there is a ground for the relay when it latches. Also check that fuse (slim chance of it being bad). Then take the CPU apart and resolder the jack connectors (just reheat them might do).

The idea is that when the car is not turning and the key is on, a ground goes from the alternator to pull that relay in. When the relay is pulled in, a ground is sent to the idiot light cluster to illuminate all the idiot lights. Something like that anyway.
You can search idiot lights-2nd gen
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Old Sep 23, 2002 | 12:16 PM
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Aaron Cake's Avatar
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You should know by now to search. Standard cold solder joint problem.
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Old Sep 23, 2002 | 12:18 PM
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i though he said there was going to be an image attached

I checked everying in my logion with a resisance meter thingy and my cluster doesnt work right either

the hatch and door lights common occasionaly, the gas light has never been seen and i dont think ive caused others to have to come on, oh yeah the coolent light also works
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Old Sep 23, 2002 | 12:39 PM
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DC350's Avatar
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Rotor Head
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Yeah, thanks for that Aaron. I already bought a new one with better solder joints. Just wondering if it could be another computer related problem.
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