He apparently has the relay setup, just needs to add control.
Electric Cooling Fans
- Thread starter JPVortex
- Start date
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He apparently has the relay setup, just needs to add control.
OP
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JPVortex
Full Access Member
Ok thanks, then I just need to ground the switch and I should be good?
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JPVortex
Full Access Member
Didnt even think of that damn
Doesn't matter if you're controlling the relay. It takes the current, not the switch. Think about it, could the ECM circuit handle that current? Nope. Hence the relays.
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JPVortex
Full Access Member
That's true, thanks for the lesson in electrical haha. I really know nothing about electrical lol.
Scottydoggs
Full Access Member
you really need two relays, one for each fan, pretty sure i mentioned this in a earlier post. you can power both relays from one switch and with one split power supply lead to the relays.
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JPVortex
Full Access Member
The stock fan wiring has 3 relays, which is what I'm doing. All I'm doing is manually cutting or giving the circuit ground which is exactly what the PCM used to do at one point.
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JPVortex
Full Access Member
Figured out the correct spots for all the wires and theyre all wired up! They work great.
ivin74
05 NBS Nali
You have pics?
So this must mean you’re not getting a signal from the PCM to turn the fans on. I know you can buy a used one programmed to your VIN on eBay or similar so you could go that route since it looks like it’s not turned on in your tune. I wonder if the previous owner swapped in a used PCM from an earlier year that didn’t have that pin turned on.
