Electric fan relay wiring
I need a little help here with how to wire in electric fans using relays.
Emphasis on Tric. Basic relay wiring is no problem for me, but I'm puzzeled how to do this.
Scenario; 3 electric fans(2 radiator 1 condensor), 1 temp switch, 1 A/C pressure switch. What I'd like to have happen.
A.)Temp switch closes=both Rad fans come on.
B.) A/C is swiched on= Condensor and 1 Rad fan come on.
C.) A/C switched on and temp switch closed= all fans on
Fan feed will be fused from Battery. Fans will ground at fan frame.
Control circuit, low volt, comes from Ign switch(+) and grounds for control will be from a temp switch and a pressure switch.
I'm trying to do this with as little amount of wire possible so it looks clean.
Assuming the control wire leading to the pressure and temp switch splice together
it looks to me that both rad fans will get a ground when only one is commanded. This is using a 4 post relay in the circuits(is there another type?)
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