Upgrading from a 4-Way to a 7-Way Trailer Connector on a 2016 GMC Terrain
Question:
I have a 2016 GMC Terrain with the trailering package that is equipped with a 4-pole flat connector. I want to upgrade to a 7-way connector. What equipment do I need?
asked by: Bill
Expert Reply:
The easiest way is to use our # ETBC7 kit to convert your 4-way trailer connector to a 7-way. The it includes everything you need from the conenctor to all of the wiring and circuit breakers.
If you're installing a 7-way to power a trailer's brakes you also need a brake controller. If you need one I recommend the Prodigy P3, part # 90195. It's one of our top sellers because of how reliable and easy to use it is.
I've linked an install video of the # ETBC7 being installed in a 2010 Acadia which is a similar process as your Terrain. The controller in the video is the P2, part # 90885, but it installs the same as the P3.
If you don't need the 7-way to have any functions other than the lighting functions of your 4-way then you can use part # 37185 instead of the # ETBC7. In this case you can just cap off the extra wires and not use those functions.
Products Referenced in This Question
Adapter 4-Pole to 7-Pole and 4-Pole
- Trailer Wiring
- Wiring Adapters
- Multi-Function Adapter
- 4 Flat
- Plug and Lead
- 4 Flat
- 7 Round - Blade
- Hopkins
more information >
Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LCD Display
- Up to 360 Degrees
- Tekonsha
more information >
Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LED Display
- Up to 360 Degrees
- Tekonsha
more information >
Product Page this Question was Asked From
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Accessories and Parts
- Trailer Brake Controller
- Installation Kits
- etrailer
more information >
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