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Alternator ground cable - where does the other end go?

posted by  Will740turbo on  Sun Feb 25 17:00 CST 2024
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last visit: Wed Oct 22 16:09 CST 2014
[RELATED]

I've poked around a little and can't see an obvious answer.

1990 740 GL Regina with the accessory configuration of a 740 turbo - alternator on top of the AC compressor.

Where is the other end of the alternator case ground supposed to go? I was doing troubleshooting on the No-start I have last night and bumped the ground wire I had made. Interesting thing happened... I had the key in KP2 and the fan set to defrost but the speed set to 0. Once the wire was disconnected, I heard the defrost fan start up. Wire connected = no defrost fan. Disconnected = defrost fan on.

I had a spare ground cable candidate that I pulled out of a recycling bin at work (shhh don't tell) and ended up putting it on the bracket that the IAC mounts onto on the bracket that connects to the engine manifold and to a bracket on the block near the engine mount. This is the same place it was mounted before, but I've never been entirely sure where it's supposed to end up.

Should it terminate at the engine block or the head?


Happy bricking
Will






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