Wiring 2 electric fans? use 2 relays?

[bdeisle]

simple, if your using 2 electric fan do you wire 2 - 30amp relays . 1 per fan ? if so do you wire them individually or piggy back the 2 relays together

[krustindumm]

what is the rated current flow of each fan?

[FRpilot]

while we're on the subject and its been in the back of my mind.. how do you wire up fans? i was thinking of getting a koyo radiator with dual flex a lite fans. at worst, i was goign to wire the fans to the ignition so its on when the car is on. what is the proper way to do the wiring with a temperature gauge?

[Jeff240sx]

I wired up my Koyo for constant on (I live in FL, where a 70* day is rare), using 1 30A relay per fan. Wired individually of eachother.
-Jeff

[krustindumm]

Proper way is with a thermostatically controlled switch, constant on can kill the fan motors. Here is basically how you would wire it from the relay out:

85----ignition switched & fused power (ie: ECM power wire, radio power wire, etc...)

86----thermostatic switch (on just higher than thermostat, off ~10-15* under)----ground

30----30A fuse----battery constant power

.........--fan--ground
87--<
.........--fan--ground

i can draw a pic if needed, but that should work for you if the fans are less than 15A each.

[asiangento]

i use the greddy multi switching system. it turns my fans on and off at different temp. it also displays speed, rpm, and coolant temp; w/ peak hold. it's the shit.

[wootwoot]

If you are going to get fans you should probably get the Altima fans off of any ka24de equipped Altima; They flow more than FlexALites. 1 relay per fan and 1 inline fuse for each is the best way to do it. On Altima fans you almost should do 2 relays for each fan since they have different power settings. Also copper Koyos have been prooven to cool better since the fin count is less and they flow more air.