94 rear air question

I did a search and didn't quite find an answer and hope someone out there can help. I have a 94 suburban with rear air. The fan motor won't come on when i turn on either switches. I can jump from the red and black wires going into the fan motor harness and the fan blows. I can jump across each relay using the red wire into the relay to the proper color wire at the relay. It will blow air that way. But I get nothing using the switches. Is there a fuse or circut breaker somewhere other than at the fuse box. Any and all suggestions would be a great help.

OK. I feel like a complete idiot! :screwy: After checking continuity from the front control panel to the back panel, to the connectors in the back and finding no problems, I got flustered and put it all back together. I figured they could suffer in the back!:evillol: Then again I started back at square one. I pulled the fuse and checked it with an ohm meter. Got resistance. Then I happened to squeeze the fuse just a bit and lost connection. I thought, Could it be? I changed out the fuse and the fan fired up!:grinyes: That is the second time the first sollution was the right one!