Going from memory here which is not my strong point!!
I lowered the box and found one of the switches faulty and replaced. Soon afterwards customer back again complaining of
flashing transfer lamp, when scanned again was 26 (i think) rr speed sensor fault and another switch fault, retested all switches and sensor output wiring
up to control unit and all showed ok. Customer not willing to spend any further so had to stop at that.
Ray
Do you have any test data available for these switches?
Thanks