cooling fans rigged on 92 olds 88

the fans run continuously due to the rigged wiring. i checked with scanner and the ecm is triggering the fans to come one at 214 deg. i need help as in finding the culprit. there is no fuse blown in box. is there one in the passenger kickpanel on this car? i havent looked yet. also how do i determine if a relay is bad? there is also two square white things on fan assembly. what are they? where is the coolant fan switch. i can't determine which is which without help.
i will try to test the wiring going to the fans tomorrow