Technical Boot wiring diagram for Mulitwagon

[swirl]

Before i bought the multiwagon somebody had disconnected the supply to the boot installed another relay and a button by the steering wheel to open the boot, there is no supply anywhere on the boot, split tailgate, wiper, anywhere it has been bodged with a relay rolling around in the void by the small fuse box in the boot and a cable from front to back to operate the boot solenoid, does anyone have a wiring diagram for a multiwagon so i can trace the problem or any thoughts thanks Swirl