I just got my BD F150 grill dual light bar kit and have a question. I want these to come on with the high beams. Can I use the high beam wire to trigger the relay instead of the switch without cause any BCM issues?

This is the kit:
BD dual light bar kit
This is the wiring harness it comes with:
wiring harness

 

I would think you could power (trigger) the relay off the high beam wire as the relay draws very little power...
Try it to be sure...maybe don't do any drastic cutting /splicing to test ??

 

This might be illegal. Just saying

 

and does nothing to answer the question, just saying..

If I was a dick that drives around with my high beams on at all times blinding the crap out of people it might be an issue. I drive 500 miles a night and have never seen one of the douche bags running 40" light bars right behind another vehicle pulled over. Thanks for your concern but won't be a problem because I will be respectful to other motorists.

 

Actual reason for the question is there are many more lighting threads on a raptor forum and there is a tech telling members to not do it. Others there said they saw no issues after they've done it. I was looking for responses from forum members here who might have hooked a light bar or SAE approved driving lights (legal by the way for the worriers) to a hi beam trigger.

 

I may be wrong but I feel like an easy way to do this would be to put a split core current transformer (CT) on your switched side of brights then run that CT to your relay. As soon as you turn on your brights, CT senses that, trips your relay and voila, light bar comes on. I know its not the answer you are looking for but seems simple to do in my mind.

 

I'll have to look that up to see what you're talking about. Thank you for the idea.

 

I'm no certified electrician but have done my fair share of electrical work. I'm sure others can describe it better but basically a CT is a switch that detects the current running through a wire. So when you turn your brights on, one wire is now getting power that was not before (switched side) you put the CT around that wire and when it senses current it will close the circuit that you can have run to your relay and whatever is hooked through that relay should power on. Hopefully someone with more technical knowledge can say if I'm wrong or describe it better. Hopefully you can find a way to do it through the truck like you are wanting though!

 

thank you

 

Can someone provide an example CT that will work and you can buy? There seems to be a lot of different types when you do a search.