here is the circuit diagram,
had to rethink my plan, relays need to intersect the wires to resistor pack, marked in red, to retain 4 speeds, therefore 4 relays in cabin, adjacent to resistor block.
Should be out of the way, if packaged well, needs 12V in cabin, probably run a fused wire thru the firewall.
all ideas welcome, especially
before fitting
dont want to introduce new Automotive Electrical 101 mistakes