As of late the progress has been getting slower, to the point where the few that were watching this saga can no longer stay awake!
Today some goodies arrived via courier, two 24volt water heated fans.
I won't go into details as to how I'll be using them, that can wait until I get to that stage.
Knowing that a new can of worms was waiting for me I abandoned work for play time.
Wanting to use as much Plaxton as possible I wanted to power these fans from the coach wiring loom.
Plaxton go into overkill with the fan wiring. To Avoid using resistors to slow the fan speed they have a relay system that swaps the wiring from parallel to series.
First in the puzzle was to find the switch and the socket. Easy.
Next find the wires to connect the fans, not so easy.
Thought required. After studying the wiring diagram I thought it would be easier to solve in Parallel (full speed)
One fan works, the other doesn't.
I had a pile of redundant relays, so it was easier just to swap them out until I heard the second fan.
Switched to low speed and the fans slowed. Success
I know it's not much, but it could have been a pain. Pleased it was solved in an hour.