Post by
ILikeMy240sx »
https://forums.nicoclub.com/ilikemy240sx-u16757.html
Fri Nov 24, 2006 3:23 pm
If its a thermostat controlled relay, its pretty easy.
You will have a 12V directly from the battery to the relay and there will be ground from relay to the chassis.
You will also have a 12V power line going from the relay to the fan usually with a fuse in the middle. The fan also needs a ground.
You will also have a line from the thermostat to the relay and another line that goes TO the thermostat which will have a swtiched 12V to it.