Ign and Gen light - Team Camaro Tech
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post #1 of 12 (permalink) Old Sep 8th, 09, 07:00 PM Thread Starter
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Ign and Gen light

Messing with the wiring on the ign and the sucker grounded, blew the fuse. Replaced fuse, but gen light does not come on when I turn the key. bulb tested OK. What did I blow?

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post #2 of 12 (permalink) Old Sep 12th, 09, 04:05 PM Thread Starter
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Re: Ign and Gen light

bump

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post #3 of 12 (permalink) Old Sep 13th, 09, 06:30 AM
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Re: Ign and Gen light

I would get the alternator checked as you may have hurt the diodes, Also check your fusible links by your horn relay. In the future for safety reasons you should always disconnect the battery negative lead before working on the electrical system.

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post #4 of 12 (permalink) Old Sep 13th, 09, 12:40 PM Thread Starter
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Re: Ign and Gen light

Thanks. Where is the horn relay located?

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post #5 of 12 (permalink) Old Sep 13th, 09, 02:11 PM
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Re: Ign and Gen light

Engine side of radiator support driver side under the volt regulator.

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post #6 of 12 (permalink) Old Sep 13th, 09, 06:27 PM Thread Starter
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Re: Ign and Gen light

OK. Found horn relay below voltage regulator. What is a fuseable link? Is this inside the horn relay?

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post #7 of 12 (permalink) Old Sep 13th, 09, 06:40 PM
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Re: Ign and Gen light

The fusible link is attached to the horn relay, the orange section connected to the red wire.

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post #8 of 12 (permalink) Old Sep 13th, 09, 07:36 PM Thread Starter
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Re: Ign and Gen light

Thanks. Found fuselink wires and tested oK.

I guess that leaves the alternator but its seems to be charging.

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post #9 of 12 (permalink) Old Sep 14th, 09, 02:52 AM
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Re: Ign and Gen light

GEN light gets battery voltage to one side of the bulb when ign key is on, alt not running.
Volt regulator provides a low potential, almost ground, to other side of bulb when ign sw is in IGN.

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post #10 of 12 (permalink) Old Sep 14th, 09, 02:07 PM Thread Starter
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Re: Ign and Gen light

So perhaps I cooked the voltage regulator?

Thats an easy fix with a cheap part from Autozone.

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post #11 of 12 (permalink) Old Sep 17th, 09, 07:00 PM Thread Starter
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Re: Ign and Gen light

New part from Autozone installed. I assume the unit grounds itself to the body. Gen light still not going on.

Running out of ideas here.

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post #12 of 12 (permalink) Old Sep 18th, 09, 03:45 AM
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Re: Ign and Gen light

If VR is bolted to the rad support on rubber wellnuts they call them, then a bonding strap goes from the bolthead to rad support to ground the VR chassis and hopefully place it and the alt case at the same potential, ground.

You might have destroyed the cluster motherboard or light socket/holder. With key on, eng off, one contact will have battery voltage, the other contact will have a lower voltage, maybe a volt or so. With engine running, VR wire #4 supplies electrical system voltage back to the GEN opposite of ign switch side to turn off the light.

You might read the stickies at the top of this section.

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