Amazon: pontiac g6 headlight wiring harness Amazon: pontiac g6 headlight wiring harness. Skip to main content. Try Prime All H4 HB2 9003 Wiring Harness Headlight Socket Heavy Duty14AWG Ceramic Headlight Connector For Car Truck Boat Marine Headlight Fog Light Retrofit(Pack of 2) 4.5 out of 5 stars 38. $7 $ 7. 99. Pontiac G6 Hi/Low Headlight Wire Kit | Advance Auto Parts Advance Auto Parts has 2 different Hi/Low Headlight Wire Kit for your vehicle, ready for shipping or in-store pick up. The best part is, our Pontiac G6 Hi/Low Headlight Wire Kit products start from as little as $8. When it comes to your Pontiac G6, you want parts and products from only trusted brands.