Its easy, fitted my tow bar / wired up in under an hour.
If you take out rear lhs light cluster you will see a rubber grommit at the bottom of the recess.
run the wiring loom up through the hole / cut wiring loom to lights and join in tow bar loom.
i got wiring info from a tow bar site off of google - foc.
hope this helps
kev
kev, October 2007