Tapping into high beams

[mxquattro]

Im putting in some aux lights and I want them to automatically turn on when I hit the high beams, and off when the high beams go off.

I do have them relayed, and I do have them switched so they arent all the time my high beams are on. I need to find a reasonably easy place I can trigger the relay for them when I hit the high beams. the wiring harness to the lights is pretty well buried. Any tips appreciated!

[13_SkylineSedan]

What year is your car? My 2013 sedan has mechanical shutters that move inside the headlamps to change from low-beams to high. Same bulb, just a different reflecting angle. It also has a relay and two fuses on the IPDM (#54 & 55) which power these high-beam "solenoids". You may be able to tap off at that point if you are just powering a relay.

[mxquattro]

Sorry I should have included that, Im sorry. Its a 2009 G37Xs. Im not sure mine has that but I can look. Thank you!

[13_SkylineSedan]

I think it does. '09 sedan service manuals are here:
http://www.nicoclub.com/FSM/G37/Sedan/2009/
"EXL.pdf" (Exterior Lighting) is the book you want.

[mxquattro]

Update: With the help of the previous post, I found the trigger wire in the harness. I tapped off that to run my relay and now its perfect. I took it off the drivers side, where the harness is easily accessible from under the hood. I carefully cut open the loom, and it was the heavy purple wire. Works perfectly.
Thanks guys