ELECTRONICS EXPLAINED

There was a time when recreational vehicle (RV) electrics were very simple indeed, way back when they didn't have 240V mains power at all — anyone remember LP gas lights? Many of our readers will recall when caravans and motorhomes had a few 240V power points and dome lights that came with both 240V AC and 12V DC incandescent light globes. There were no 12V batteries of any sort and the 12V supply came from a ‘hot wire’ to the tow vehicle, while fridges were mostly 2-way, 240V AC and LP gas. Very simple, hey?

TECHNOLOGY PLUS

Things have changed, have they not? Even basic vans now have both 240V AC and 12V DC systems, and a 12V DC battery