Wiring loom

Hi
Can anyone help on where to buy a complete wiring loom for a mk1 87 gti cabriolet please, i have just purchased the car and the previous owner said the electrics need sortiong and that the owner before him had bypassed the fuel pump relay. Looking at the fuse board a few of the wires have been taped up and some are damaged so im thinking best course is to rewire. Also need to get a fuse box and relays as the connections are rusty.

Thanks

Simon Baverstock