Q: Why would I want to disable my auto headlights?
A: When running HID's, ballasts draw much, much more power than regular halogen bulbs when they first ignite. By disabling auto headlights, we let the truck start, then turn the headlights on, making it much safer on the ballasts as well as much easier on the electrical system. Also, when it is dark and you cycle the key from run to start, the lights flash. Theoretically, by doing this mod, your ballasts would only fire once instead of twice, doubling the life of them!
Q: Does this mean I don't need a relay harness for my HID's?
A: Always run a fused relay harness.
Q: What else do I need to do?
A: On NNBS trucks, you should pull the DRL fuses, so the HID's dont come on during the daytime. Click here for write up on removing DRL fuses