I can try the cleaner first and see if that makes any difference. I sprayed it and the spray helped, much steadier on the volume control, no noise. Good call.
The radio has been worked on at some point probably many years ago but I don't know who or when. Came with the truck, in a box. PO passed on before he got to install it. Capacitors have been replaced, but again I don't know if it has been converted but my truck is 6 volt. I have pictures will try to post.
