Hi there
We have a mid 90's boss electric truck, with a Bosch LT200 traction controller and a Bosch LT200 Hydraulic controller, single drive truck.

We have a problem where the lift motor works, but the valves do not open. We have powered up the valves externally with a supply and they work. The common feed negative is present, but by looking at it the positive supply, which looks like it should come from the Joystick (hydraulics, direction and horn function) is not present.

Can anyone shed some light or perhaps provide a wiring diagram which shows the valve connection wiring please?

Unfortunately there is no plate on the truck so dont know the model serial.

Regards