Must be the day for Captiva questions. This is number 2. (Moved from Captiva sub-forum - nobody reads that!) I purchased a used factory tow bar for the beast some time back and installed it. It came with the factory wiring loom, which simply plugs into spare plugs under the boot floor. And the trailer lights won't work....... ....because Holden, in their wisdom, include a separate wiring circuit for trailers which has to be installed during manufacture, and mine obviously didn't get it. The wiring is in the boot, but no fuse is provided and the fuse socket lacks the connectors to fit one. The factory tow bar loom includes two relays and two multi-pin connectors. Only one connector actually plugs in, the other seems to sit there and do nothing. I can't get my hands on a factory wiring diagram, so at present there is no trailer connection. Question: Can I just disregard the factory connections and cut and connect the trailer wiring to the various tail-light wires like we did in the old days, or does the modern car with its multliple electronics and modules, demand that the factory wiring set up with relays etc, be installed? Anybody?