Thanks aviator! That's interesting about the amplifier and would definitely fit the symptoms. Since I don't think I have 12V to test(?) or want to bother with a relay, do you agree that it would be easier just to bypass it then? I believe I have the regular audio system so can the speakers handle it right out of the new HU or should I still use the FAI-1A Scosche
adapter in between?
PS. Btw, as indicated in initial post, my Panasonic never had the extra blue wires for the amp or antenna, just a blue wire for a remote control (my Sony harness had the 3 blue wires) so not sure how I could hook-up with a relay anyway. Again, thinking about bypassing as easiest option at this point. Thx!