I don't know if anyone else has done this but i just bought a BWD coolant temperature fan switch at local auto parts store for 20 bucks. i don't plan on having my temperature gauge ever work again so I took the thermostat housing out for a cleaning and to make sure the thermostat still worked. i pulled the sender off the back of the housing and the swith i got (part # TFS500) fits perfectly. i'm going to wire the switch to key on hot and hook the other side to the fan then chassis ground the fan. i didn't see the cooling fan "how to" anymore so I don't know if this was already astablished. just wanted to pass it along.