hey_7up_yours

Iam looking for a few parts for my 92 SC400 new or used. Iam interested in a cooling tank and anyone that may have experinced a strange problem with the radio. It can be herd but its very faint and it seems to come and go. I can turn it all the way up and hear it , and it doesnt matter if its on cd, radio, or tape it happens in all modes. I have checked for all the obvious such as fuses , crimpt wires, unpluged connections and I cant figure out why it comes and goes and when it goes its about 2 days before it comes back to normal. Any suggestions are helpful.. O I have the 12 Disc changer, and Nack. deck ......... Thanks