PartsSquare 175-185 Degree Electric Cooling Fan Thermostat Kit Temp Sensor Temperature Switch 40 50 60 amp RELAY KIT

Cant speak for the product yet but IT IS NOT A 3/8 THREAD! In the picture provided is the sensor i recieved next to a 3/8 bolt. (The threads are different but the point is the sizes are completely different as well) went to my tap and die set and turns out that its a 5/8 fine thread. i bought a inline unit that is a 3/8 bung that are "frequently purchased together" but the sensor doesnt even come close to fitting. The 2nd picture is the 3/8 bolt started in the inline unit (threads dont match, just used for size reference) and the last picture is the sensor placed in the bung. Dont have time to return so i have to drill, and tap the bung to fit sensor, DO NOT BUY THIS IF YOU NEED 3/8 NPT IT WILL NOT FIT!

The instructions were lacking the arrows that I drew in and attached here for other buyers.If you were to have hooked it up wrong, you could have easily fried the relay as the 30amp automatic resetting circuit breaker would allow enough current to nuke it.The relay included with this kit is a 60 amp relay which is a pretty high rating for the wiring, but I’ve not yet seen even a pair of large fans pull more than 40 amps on cold start-up.A small dab of teflon thread sealant at the very top of the threads is a good idea. This way the bottom threads will make good contact for your ground reference on the sending unit. I just can’t see putting NPT fittings together dry as they will usually start to weep after a while...

As like some people have said, the image on the instructions are completely rediculus. my buddy and I had to look up a diagram for the relay to understand what the hell we were dealing with. Once we sorted that out, wiring went pretty easy. The diagram looks like it wants you to do one thing but, its actually for the wire underneath. We got it all wired up, let the car run until temp came up and bam, fan kicked on and off like it's supposed to!On another note, it also says to not use thread tape! Complete lies. We didn't like the instructions told us not to and guess what!?! It leaked. Took it back apart and put tape on the threads like a normal person and it still worked just fine. I didn't have any problem with the fittings provided. The bigger fitting fit perfectly into the thermostat housing and the temp gauge thing fit into that! Piece of cake! Now we'll see if it outlast the ones I kept buying at Horrid Zone.

Confusing instructions, as I've never installed a relay before, but found a few pics that helped. Labeled the leads coming from the relay and installation was painless. Replaced declutching useless fan, now keeps temp steady around 180 degrees. Installed a 160 thermostat, fan comes on at 185 and shuts off at 175. Very pleased with product.

Works Great .I was able to wire to an adjustable thermostat by bypassing( not using ) thermostat that came with product so that I can now set to temperature I need ..It is able to handle amperage for a 18 inch fan and 10 inch fan wired in series without blowing fuses which was problem I had before buying this ..I had asked multiple Auto parts stores and also my brother who is a mechanic if there was set up to pull power directly from battery but using relay from ingition so that fan would not run when ignition was off and they all said no such setup existed..They were all wrong ..I will post name of adjustable thermostat i use soon