Heavy Duty Headlight Harness

[1957F100]

Ive been looking into getting a upgraded headlight harness for my truck. I was just wondering if any of you guys have these harnesses and what you think of them?

Ive read on the internet that since they pull power from the battery you get brighter lights and since the headlight switch is no longer pulling the power they wont overheat and melt, which is suppose to be a common problem.

It says daytime running lites must be disabled to use this harness. Does anybody know why? and how would i disable my DRL? Also do any of you guys have HID lights? I would like to get a set in the near future and i was wondering if i would be able to use this harness with HID lights?

Heavy Duty Headlight Harness
Heavy Duty Headlight Harness

[ReAX]

I had a kit from painless wiring and it was amazing. Nice relays and pretty heavy duty wires.

The reason they say to disable the DRLs is some DRLs operate by putting half voltage to the low beams. That voltage is enough to power the relays which will dump full voltage/current into the bulbs while the DRLs are active.

That is correct about the wiring, there is less flicker and better current flow since the power isn't running all around the truck through small gauge stock wires. If you are using HIDs you don't need this, they work much the same way, the stock wiring trips a relay in the ballast and the ballast draws it's current from the battery.

[1957F100]

so HID lights connect to the battery somehow then? i thought HIDs just plugged into the stock headlight plug?

[ReAX]

Good kit should plug into the stock head light harness to get the signals to activate high and/or low beams (depending on the kit), then the ballast should be connected to the body ground and the battery for it's primary power. HIDs should consume a whole lot more power than conventional bulbs, I wouldn't install a ballast without it's own power source.

So far all of the kits I have come across have been this way.