ok guys, i have a 88 iroc with a 5.7 in it and dual fans. i would like to know if i can just switch the secondary temp switch with a primary one and have both turn on at the same time without having to wire the grey and green/white wires together?? the other question is where the heck are the temp switches for teh secondary and primary fans located?????????

 

One is the coolant temp sensor, in the front of the manifold, the other is located between #6 and 8 cylinder on the passanger side cyl head.

 

u usually do not need both fans running to cool down the engine, if u r looking for reduced engine temp just buy a lower fan switch for the passengers fan, and a lower thermostat like 180, and you should run around 180 to 200.