installed CB, now strange motor noise

[dlinden200]

I installed a cobra 75. I pulled the front console and installed the little electronics box there. I connected power to the rear windshield power switch.
Connected red from CB to the blue wire on the wiper swith and ground to the black wire. Everything works - BUT -, when I key the mic, there is a small whinny motor sound from the engine. IT IS NOT the wiper water pump.
It is real quiet, I cannot hear it when the engine is running. IT is a high rpm motor. It is coming from the block, on the exhaust side of the engine.
I have a feeling some of you are going to tell me I'm crazy or say its the wiper pump you idiaot! ITS NOT!
The hummer idles fine when I key.
I have not driven it yet to see what happens. Kind of afraid to.

Dan