I'm swapping to an efan and am trying to figure out the thermoswitch setup.
I found a lot of good information here .. https://www.rx7club.com/2nd-generati...switch-886862/ ..
Wiring to the stock thermoswitch in the thermostat housing looked like the way to go, but someone mentioned getting an aftermarket thermoswitch that would fit, but would allow me to simplify the wiring.
1. Does this sound like a good idea?
2. Does anyone know of a part # or/and where i can get that type of switch?

 

Mitsubishi starion switch. Threads right in, is reverse switched so only one relay is required. That how I did it.

 

I don't think this is the exact one I'm using because I think I got mine from Summit Racing, but it looks just like this one.
JEGS Performance Products 52125, JEGS Adjustable Temperature Control Switch | JEGS Performance Products

I put the tube on my radiator near the upper hose and then adjusted it to come on at the temp I wanted on my Autometer gauge.

 

The Starion switch is what will work for an s4 (you haven't declared what series you have).

 

I've got what's in my sig.

So, just to clarify.. a Starion thermoswitch will allow me to simplify wiring as opposed to using the stock thermoswitch?

 

Most of us are using the app, which doesn't show signatures. So again, I don't know what you have, but I take it you have an s4.

Yes, the Starion switch will simplify your relay wiring by using a more sensible normally open switch. It threads right into the stock location on an s4. Keep in mind if you still have a/c, this will trigger your aux fan the opposite of when it should be on! So in simplifying your cooling fan wiring, you'll now need to correct the coil triggers for the aux fan wiring to now mesh with the normally open switch.

 

Apologies-didn't realize that. Yes, I have an S4..88TII with a/c.
So, is it safe to assume that since I'm keeping the ac, I don't really gain anything by using the Starion switch? I'll simplify wiring for the main fan, but then I'll need to complicate the aux fan wiring by wiring it up the way I would've wired up the main fan had I not used the Starion switch?

If so, are there any solutions to this? I guess I'll just have to flip a coin.

 

If the car is the TII listed in your signature with the Microtech, then just use the aux output on the Microtech to activate the fan (through a relay).

Now you can set your on point to whatever you want (the Microtech turns it off 5 degrees lower). And it doesn't require any additional sensors, switches, tapping, etc.

 

Problem solved. Tx.

 

Lol had I not been on the mobile version I could have seen you were running a micro tech... future reference: if info is in your sig, just post it anyway...