Your switch in the cab controls the ITP relay under the hood correct? If so, all you have to do is put your headlight sw in parallel. Basically, your high-beam power wire will also be connected to your ITP relay as the trigger wire. so either power from the sw or power from the high-beam will trigger the relay. You'll need a diode on the high-beam to keep power from going back to the headlight when using the sw. Somebody as done this already but your right, it's a bitch to find. Check this thread, page 25, towards the top. jeffb's schematic in a PDF also on that page is what you want.

http://www.dodgetalk.com/forums/showthread.php?t=75498&page=25&pp=20

 

Is there an actual trigger wire that sends a signal to the light to make it high beam and if so where is it and what colour is it. This would be the best wire to tap into to send the signal to the relay to turn on the auxliary lights on/off with the high beams. Does anyone know what it is and where. I have daytime running lights and just want to make sure i hook this up right.

 

thanks

Iwill check that out...thanks!

 

I tapped into my headlight wires for my Hella's. I took out the drivers side headlight and there are 3 wires coming from it. It is one of the two wires with a stripe running around it. I'm sorry I can't remember exactly which one it was, but that gets you a little closer anyway. I have an '03 the wires may be different colors for different years.

 

Thanks

Thanks, have to find the diode and will then give it a try!

 

Here is the schematic if you guys need it

 

What is the diode for? I didn't use one and my lights work just fine.

 

Without the diode you are backfeeding power and you can have a problem. The diode gives the power only one way to flow. Safer that way.

 

what are the specs on this diode? Does it need soldered inline with the high beam trigger wire? Thanks.

 

what are the specs on this diode? Does it need soldered inline with the high beam trigger wire? Thanks.

Yes, solder it inline between the trigger wire and the connection to the wire for pin 85.