Earlier this year I experienced the EXACT same symptoms with my BP-101 in my 01 P-III.Checked all of my connections, cleaned the cannon plug on the dash feed with dielectric grease, replaced circuit breakers, tightened/cleaned connections at the terminal block, etc!!!It would work fine for a day, then go blank on me the next day (no touch pad functionality, aerator coming on by itself and cant turn off).I threw in the towel and did the analog dash/gauge replacement thing.Also added the boat alarm and two extra gauges supplied by BC at additionnal cost.Im happy with the retro-fit, but wish I had gotten white faced instead of black faced instrument gauges.Thank goodness that nightmare is over as it pretty much rendered my boat useless (no aerator) and unsafe (no bilge pump, no bow/stern lights)!Good luck, and I hope its just a bad ground wire for you!