Tranny Temp Switch ?

[truckins10]

Anyone have a source for a tranny temp switch to for a cooling fan operation. Im fabricating something and cant locate a switch (close at 185 or there abouts) to power the fan when the temp reaches a certain set point. Know they have them as kits but what about just the switch?? Thanks Boys, Fern

 

[100in6]

check out the one on b&m cooler and see how they they rig theirs. get it to come on as close to 160 as possible. i hear atf doesn't like it at close to 200 and starts to deteriorate. i put in a remote filter for the atf that had a guage connection to monitor temps