Trans cooling fan help

[fastblackcar]

i need help as how to wire a small cooling fan i mounted to my transmission cooler, i have a spot on my ashtray switch cluster, do i need a relay or should i bug it in with the radiator fan and skip the switch, where would i get a relay ?

 

[1975ssnova]

I would not connect them together myself, I would use a relay and you can get one from any parts store.You can also get a kit thrue jegs or summit that will have everything you need to hook it up.