Originally Posted by Enemy
What's the stock wattage of our bulbs?
Also what is this wiring harness you speak of?
55/60w. Something like this - Painless Performance: H-4 Headlight Relay Conversion Harness
You can buy them on ebay, make your own, or do like I did and get the IPF/ARB harness because I was also buying IPF lenses and bulbs. Essentially, you wire one end of it to your battery terminals, and the other end plugs in between your existing headlight wiring and the lights themselves - no splicing, soldering or anything like that, it's truly plug and play. That way the current is actually traveling directly from the battery to your headlights, rather than going through the headlight switch first and losing a couple of volts. If you go to more powerful bulbs, the additional draw through the switch can cause it to fail if you don't use relays.