hi i have a 1999 bailey ranger 500/5 i havent used since last aug we went down to our site today to get it ready for the season but i have a problem with the electrics i plugged in the mains lead turned everything on but had no lights only the 2 lanterns also the water pump wont pump ive checked all fuses and wires but still wont work so had to come home any help would be great thanks.