Bi-xenon Relay: GTR Pro (9004) GMC ComfortLite high beam optics and

ComfortLite high beam optics and adaptive technology to produce a superior beam pattern and dramatically improve rider comfort and safety

This additional illumination fills in the gaps that traditional headlights can't

The harness also includes an input line that's ideal for use with upfitter switches

eliminating the risk of detachment

1s with full brightness reached at 9s

Bi-xenon Relay: GTR Pro (9004) GMC ComfortLite high beam optics andReality Check: Customers often ask, Do I really need a harness? Yes! A relay harness is designed to deliver steady voltage to your HID ballasts directly from the car battery. Nobody likes a flickering headlight, so why risk it? Factory headlight outputs are really only designed to power a halogen light bub, not an HID ballast. Under Control: GTR Lighting makes it easy with the 9004 Bi xenon relay harness. Designed to be completely plug n play; it's a