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Old 01-27-2016, 12:52 PM   #467
JJorgensen52
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Join Date: Apr 2007
Location: Southeast CT
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Re: 1952 Chevy Vette Roadmaster LT1 Farm Truck Build

Quote:
Originally Posted by FarmerSid View Post
Thanks JJ. So the relay kit will plug into the stock engine harness? The temp sensor on the engine block goes to this relay kit too? Sorry for the dumb questions!
No such thing as a dumb question when it comes to wire harness, they're confusing as all get out

The relay kits (say you bought the SPAL FRH one, like this one this one) are set up to run power direct from the battery to the fan. There will be just one wire (the relay coil ground wire) which gets connected to your engine harness, via the pin 42 shown in the PCM pinouts.
You're going to have to add a pin to that position on the connector - but lucky you, you have a some extras you can remove from the connector for other functions you don't need, so you can just use one of those and solder to your relay ground lead

I may possibly have one of those PCM connectors in my pile of extra parts laying at the house, if I do I can snap a few photos of what I'm talking about.
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