Best Way to go From 4-Way to 7-Way for 2017 Mercedes Sprinter 2500
Question:
I already installed the Tekonsha 4 way flat on my 2017 Sprinter to tow my boat. Now I need a 7 way for a new travel trailer. Is there an easier way to “upgrade” to 7 way without having to buy, install the whole kit again? - thanks-
asked by: JPL
Expert Reply:
If the travel trailer with a 7-way does not have brakes the easy solution is the # 37185 which would plug right into your current 4-way and all of the lighting circuits would be active. If instead you did have trailer brakes you'd want to use the # ETBC7 which comes with brake controller wiring needed as well as the same adapter of the # 37185.
The 7-way kit part # TK22115 which is custom fit for you vehicle essentially is the same setup as a 4-way like you have converted to a 7-way with the ETBC7 so I would not recommend that route as an easier option by any means.
For a brake controller the part # TK63VR would be a great option that's cost effective, reliable, and since its proportional it will sense how hard you are applying the vehicle brakes and give you a relative amount on your trailer brakes.
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 >
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 >
Tekonsha BRAKE-EVN Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Automatic Leveling
- Under-Dash Box
- Up to 4 Axles
- LED Display
- Up to 90 Degrees
- Tekonsha
more information >
Product Page this Question was Asked From
Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter - 7 Way Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Powered Converter
- Custom Fit
- 7 Round - Blade
- Tekonsha
more information >
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