Does anyone have any info on black tank sensor wiring or trouble shooting. I have a 2000 3255RL and none of the LED's light for the black tank, all the others are fine. Any technical info would be great, thanks in advance, Mitch.
Am I correct to read that you are getting no lights at all when pushing the black tank button? If you are not getting anything I would suspect a wire has fallen off behind the switch cover or alongside the tank. If it is reading full all the time you may need to flush the inside of the tank a few times to get it to read empty. But I am reading that you are getting no lights at all. So, I would be inclined to think a wire has fallen off somewhere.