Thanks to all the help from you more experienced members I have fixed (rewired)the trailer light problem, the dash air now works and also the water heater
. I found a water leak behind the washing machine and tightened that up but it looks like it has leaked there for a very long time so some water damage will have to be addressed. I have parts ordered to fix the water pump switching. I will get the cruise control checked out by someone more qualified than me. The only remaining issue now is the back-up camera system. Any suggestions as to what I should be looking for. The monitor comes on when I activate reverse bit It is very snowy and too blurry to see anything. When I first got it last month there were lines across the picture but I could see back there. I unplugged the cable and cleaned all the contacts and when I reinstalled everything, I had totally lost any visibility
. The unit is an older Panasonic.