Wiring electrical radiator fans
Le Mans Master
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
Run a 10ga wire from the output stud on the alternator directly to the switch of the relay. Other side of that switch to the fan. On the control side, feed it from the IGN terminal on the fuse block and the ground side to the control sensor/switch.
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,754
From: Charlotte NC
I know I would protect the wire coming off the back of the alternator with a fuse.
The fuse in the fuse panel that is supplying power to the IGN terminal is only protecting the power going to the coil of the relay and not the fan.
DUB
The fuse in the fuse panel that is supplying power to the IGN terminal is only protecting the power going to the coil of the relay and not the fan.
DUB
Le Mans Master
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
One of those things that I forget, but if I'm the one doing it, it sort of happens naturally.
Pro
Joined: Oct 2005
Posts: 505
Likes: 8
From: Houston Tx.
I used a buss bar on the drivers side inner fender. I made one fan run on a temperature switch located by the thermostat and the other run by a toggle switch under the dash. Most of the time, I don't need both fans running.
