two speed fans

I am considering using temp switches. Does anyone know where I can find a 160* and a 180* threaded type switch? 

sure, i'll even give you the part numbers for them. i need a little more info though. what kind of thread? pipe thread or metric? what size also? 1/4" pipe? 1/2" pipe? you know, that sorta stuff.

My mistake. 1/2 inch. Thank you for catching that.

well, heres the good news. i found the switches you need. the problem is they are the wrong thread. you will have to find a bushing adapter or have them made. the switches you want are not very common and alot harder to find thats for sure. the one for 160* is CARQUEST part number TS-231. the other is a CARQUEST part number TS-250. they are normally open switches that close when they hit those temps. they are a metric     22-1.5 thread though. nothing exists with your size thread or even any pipe thread that was at those temp specs. sorry

Thank you, I am impressed. I am not set on those temps. I could go -5 to +10 on the 160 and + or - 10 on the 190. Are these temps available? Also, do you know what would cause my two speed fan to run at what seems to be the high speed when connecting either the high or low speed wires to the battery as a test? I have two of these units and the other unit runs low and high (both speeds) when I test it straight to the battery.

just call your local store with those numbers. or better yet, if you have a chance go in and they have an illustrated guide so you can even see what they look like if they dont have them in stock.