Myson Orion 30Si - Fan/Vac Switch cable form?

Seems my previous plumber fitted the last extractor incorrectly which cased the cable form to get scorched and now having ground issues when hot.

Looking to replace the damaged cable, (not myself just trying to find the part for the new plumber), which sits between the 6pin block and the fan/vacuum switch but can not find a part number anywhere for it.

Does anyone know where one can be got from?

Paul Matthews
October 2011