Can anyone recommend a good reasonably priced auto electrician that can do the bypass relay electrics for a trailer. With the CANBUS based multiplexed electrics apparently you need to use the bypass relay setup if you don't use the OEM wiring.

I have found a relay box in the UK from Towbars Direct (Single Electric Kit (12N) with Multiplex By-Pass Interface Relay - £26.45: Universal Electrics | Towbars Direct) but they won't ship to Aus. I could make a plan through a mate over there, but figured if it's that cheap and easy, surely an auto electrician here can do it with local parts for a reasonable price.

Any suggestions?