No, they didn't measure any current, just removed the fuse. There is a description of what the fuse feeds in the owners manual, I think. Anyway, after talking to a service rep on the phone he came to the conclusion that it was the amplifier. Simply because it was the only radio related function related to the fuse removed.
Does anyone know of a good, independent Crossfire mechanic/electrician in the Lansing, MI area? How about a reliable auto-radio repair person?
I appreciate all of the information, although it is not what I necessarily wanted to hear. I was suspicious from the beginning, but have little basic electrical knowledge to work with. I've rewired a 1949 Ford, but that was straight forward, wire/fuse, wire/fuse,,,,,,. gcong