How to Install a 4-Way Flat Trailer Connector on a 2007 GMC Sierra Extended Cab 4X4 Pickup
Question:
How do I connect this to my 2007 GMC Sierra Extended cab 4x4?
asked by: Troy
Expert Reply:
You can connect the 4-Pole 48 inch Long Vehicle End (with 4 Wire Taps), item # 118001, to the existing trailer wiring harness behind the plug that is located above the spare tire on your Sierra if it is not equipped with a factory trailer connector. To do so you will need to use a circuit tester to identify the wires that right turn and brake signal, the left turn and brake signal, and the tail light signal.
Once you have found these wires and labeled them you will connect the white wire on the # 118001 harness to a suitable chassis ground and then attach the yellow wire to the left turn and brake wire, the green wire to the right turn and brake wire and the brown wire to the tail light wire.
If your 2007 GMC Sierra Extended Cab 4x4 has a factory 7-Way only, the 118001 harness can be spliced in behind the bumper or you could use the Pollak 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End, item # HM40975, to replace the 7-Way only connection at the rear of your vehicle with a 7 and 4-Way connection. I have this connector on my truck and I really like it.
Products Referenced in This Question
7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 7 Round - Blade
- 4 Flat
- Hopkins
more information >
Product Page this Question was Asked From
4-Way Flat Trailer Connector w/ 48" Harness and Wire Taps
- Trailer Wiring
- Trailer Connectors
- Vehicle End Connector
- 0 - 5 Feet Long
- Plug and Lead
- 4 Flat
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Search Results: 22333tbn seal
- Search Results: tire
- Search Results: wheel
- Search Results: trailer wheel
- Search Results: trailer tires wheels
- Search Results: brake assemblies
- Search Results: ramp door assist spring
- Shop: Conventional Ramp Door Spring for 8' Wide Enclosed Trailer - Dual Spring - 160-lb Capacity
- Shop: Ramp Spring - 2K Torque for 1-1/2" Round Shaft - LH
- Shop: Shackle Bolt with Locknut for Double-Eye Springs - 3" Long
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Q&A: Seal With Dimensions to Replace 171255UC
- Video: Conventional Ramp Door Spring Review
- Article: How to Choose the Right Trailer Hitch Class
- Shop: Trailer Wiring
- Q&A: Picking Out Replacement Axle for Snowbear 550LHD Trailer
- Shop: Conventional Ramp Door Spring for 8' Wide Enclosed Trailer - Dual Spring - 185-lb Capacity
- Shop: Fifth Wheel Hitch
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Grease Seals 10-36 (pair)
- Q&A: Options for Adding Interior Lighting to Enclosed Cargo Trailer
- Video: Choosing the Right Trailer Wiring
- Shop: 4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 25-1/8" Long
- Article: Trailer Tire Sizing
- Shop: Brake Controller
- Article: Replacement Automotive Lighting
- Q&A: How to Power Trailer Dome Light When Not Connected to Tow Vehicle
- Video: Review of M-3 and Associates Enclosed Trailer Parts - Ramp Door Spring - M394FR
- Shop: Ramp Spring - 2K Torque for 1-1/2" Shaft - RH
on Trailer Wiring
