I have been unable to determine the problem with a non-working rear window defogger/defroster on my '79 300D. I was told here that the most likely cause of its failure was am 80A strip fuse that I cannot locate. The 16A fuse in the fusebox has been replaced. The light on the degogger panel switch lights when activated.
Is it possible that the rear window itself, e.g. the elements in the window have failed?
Any suggestions at all will be very greatly appreciated.