Quote:
Originally Posted by wavyg
Still nothing wrong with upgrading that ridiculously small stock wiring harness while you've got it out. It will only take a couple hours even for the least experienced. If you ever decide to put HIDs in later you will want to do this, better now than later when you'll have to tear it all out to do it.
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There is no need for that if you get a dedicated HID harness. I will be personally making my own and use 16/15 gauge for it. Plenty enough for the draw. As far as the prerun, it will only be used to magnetize the relay on the HID harness. This requires milliamps, and if at most, 1 amp.
My brother-in-law played around with a multimeter on his HID setup and measured the ballasts pulling 9amps of current during warm up and stabilizing at around 6amps. Like I said before, 18gauge is safe to use for up to 16amps at 600volts.
FYI, the harnesses for both headlights use the same gauge wire if not thicker by one gauge. So if you're going to be upgrading your fog harness you should also be worried about your headlights as they are probably on more frequently than fog lights.
