2001 Pontiac Montana radio mute

This van has the radio controls on the steering wheel and the customer wants to install a cell phone car kit that has a radio mute wire that can be hooked up. Does the van have a wire to hook it up to so that the radio will mute when the phone is in use? I imagine that there should be one as there is a mute button on the steering wheel.

Thanks.

try and find that set of ribbon wire that runs from the steering column to the radio. (At least I believe I was told how strg. wheel controls were done - I've never done one before). Find the mute wire in that ribbon, find its polarity and then adjust accordingly.

         I wasn't sure if you already figured that much of it or not  -  and you were just looking for the wire color. But if you were to ask me the wire color i wouldn't know. Hope that helped a little.