Hi we have this old 1991 reach truck serial 111B10015820.

Truck initially had reverse drive problem and after an engineer had been out to it prior to me, lost all drive both forward and reverse. I replaced the pcb with 2 relays on it and now i have forward drive again. When i try reverse the contact will not energise.

Contact coil is ok and there is no voltagre to the coil. The forward coil has 48v and when i operate the twin pedal foot pedal it switches negative.
The reverse contact does not have the 48v supply. I was hoping to get hold of a wiring diagram to trace wires and voltages. This uses the old panels similar to the lansin bagnal foer 15.1.

Any wiring diagram or info would really help.

Thank you