hey guys, newbie here in 4127. Good to see a few of you are local, will be looking out for you!
I have just installed an ebay numberplate mount and LED bar - it works OK, I did expect more output, but our other vehicles all have $200+ bars. I guess you shouldn't expect too much when $60 was for all the parts including a wiring harness, which I had to extend for the interior switch.
I used the pax side highbeam wire as trigger. It was ONE OF TWO white/black wire. Now the real fun part was running the wires through the firewall. Fortunately the previous owner had a brake controller installed and so I followed that. It still took 2+ hours and a bit of swearing to wire it up properly, vs 10 min if I didn't have to run it inside. The platebracket is straight, the curvature of the bumper was a little annoying but with enough screws to the bumper it is holding up well.
Mine is a '12 with the bixenon. I also now have a Hayman Reese towbar step with reversing lights, had to add a reverse wire to the trailer plug (original reverse wire in trailer plug was removed for whatever reason). Next is some 275/45/20 (Terra Grappler vs Discoverer HT) and roof racks, as I came from a Multivan and this thing is tiny
edit: in hindsight I would've saved the trouble and got my mobile auto-accessories guy Jonny from AutoAccess, who's charged me $160 to put LED bars on our buses. Good guy.