Wire LED bar to high beams?

Firemedic10584 said:

Hmm...Ok. Once the bar gets here I may end up using your setup. I would rather put the minimal amount of stress on my high beam circuit as possible.

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If you are worried about the factory wiring at all (or any backfeeding) put a diode on the high beam wire before the relays (so the power will only go towards the relay).

Google diode and/or look on elb for specifics on that inquiry. I don't know what specific diode you'd require but its basically an electronic device which only permits electricity to flow one way.


Drawing power from the high beams- if you are only using it to trigger a relay, I would not worry. If you are using it for anything more than a trigger and/or to power anything other than the OEM high beams, I would worry/not do it at all.

The diode would prevent any random/stray currents (electricity) from flowing back into the high beam wire, which could in theory bugger with the computer/blow fuses, etc. (on the very off chance the relay shorted out, or the aftermarket light itself, or some other random event).

I'd still use a diode between the headlight wire and the relay.. unless the relay has a diode built in.