i had the same issue with mine, got the new harness from VW and fitted, i soldered the wires as far as i could chase them back, remove the battery and battery tray and you will see where they come through the wheel arch then go into a thick wiring loom peel back the tape cut the wires then solder them together try to use as little solder as possible tho as too much resistance down the abs wire will cause intermittant faults, any issue or help feel free to inbox me