Description This is the 11-Pin Light Harness with relay that comes out of the grille to plug into the plow lights for the 2007 GM trucks with HB3 and H11 headlights. It is part # 29861-3. If you need the whole kit, this harness came in two different kits – 29400-6 and 52101 (for trucks with LEDs.) This kit has a special harness because this truck runs the low beam along with the high beams and they installed a relay to disarm the low beam in the headlights so you do not melt your plow lights. The module has been revised a few times. The old single module 29859 is no longer available and you need to update to this harness with dual modules.
