Crummy headlights - Can't see, need upgrade
My old 2007 GMC has never had the best headlights. Driving from Lethbridge to Calgary last night I was really cussing them. Old original factory headlights and I cannot see worth a darn. They are...
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A simple pre built plug and play Dual Relay Harness will improve them 50%. Your likely not getting full voltage to the bulbs if running stock wiring.
