Hi

I have an Sierra DOHC 2.0 1991
I have problem with radiator fans not working.
Have been looking for a wiring diagram but not able to find for mine
In Hanynes it shows one cable from an relay over ignition
In my car i have two (black/red&black) and black/blue&black)
Today my car went hot hot and radiator fan not turning, i tried to connect a small wire in the termocontact without success

After work i tried a wire again and it worked
I go home and now the idle is malfunction.

I guess it could be an earth problem
Anybody had same problem
And know about wiring diagram with two cables ?