TC:

Both the wiper motor and the radio are 12-volt. I could not get my wipers to work consistently, so I took it to a local pro who found a short of some kind in the fuse box. I had warned him about the clearance, so he checked it out prior to starting the wipers, and he agreed that it was a very tight fit with only a eighth-inch between the top of the speaker and the wiper hardware. A little tighter than I would like, but so far no trouble. I suppose I could do a little "cold-forging" to increase the clearance if it turns out to be a problem later.....