7-Way Trailer Adapter for Voltage Issues Between Trailer Mounted Brake Controller and Vehicle
Question:
Good Morning! I have a 19 Pioneer 18BHS trailer that I am towing with a 12 Mercedes GL350. I am using a Prodigy RF brake controller that is intermittently losing connection with the trailer and at the same time - various MB indicators go off - trailer tail light failure and others - when the tail lights are confirmed to be functioning. I got the vehicle 7-pin MB factory install and wiring tested thoroughly at the dealership and no issues there. The MB dealership indicated that sometimes the trailer voltage flowing back can be low or off sometimes due to LED taillights, etc and the MB system will throw a fault/shut the system down in that case. They noted that some of their past customers have found some sort of adaptor between the car 7 and the brake controller 7 that was able to bypass/mitigate this issue. Are you aware of such a part or setup?? If it is helpful, per the Tekonsha help desk, to maintain connection to the vehicle the Tekonsha needs to have a 12 volt supply on the battery charge circuit and a signal from both brake lights circuits. Thank you for any thoughts you might have!
asked by: Sara F
Helpful Expert Reply:
Absolutely. You will want the Trailer Connector Adapter w/ Lamp-Out Sensor Bypass - 7-Way RV to 7-Way RV - Vehicle End # 20142 which has the load resistors inside to help with exactly what you stated. The 12v power supply will run through without issue to allow your Prodigy RF to function.
Products Referenced in This Question
Trailer Connector Adapter w/ Lamp-Out Sensor Bypass - 7-Way RV to 7-Way RV - Vehicle End
- Trailer Wiring
- Wiring Adapters
- Single-Function Adapter
- 7 Round - Blade
- Plug Only
- 7 Round - Blade
- Tow Ready
more information >
Product Page this Question was Asked From
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 >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Search Results: 7 pin adapter
- Q&A: How to Remove 7-Way Trailer Wiring Plug from Socket on 2015 Audi Q7 with Factory 7-Way
- Article: Trailer Wiring Diagrams
- Video: Choosing the Right Trailer Wiring
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Search Results: trailer brake controller
- Shop: Trailer Hitch
- Video: Choosing the Right Brake Controller
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Search Results: brake controller
- Shop: 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End
- Shop: Trailer Wiring
- Article: How to Choose the Right Trailer Hitch Class
- Search Results: hitch
- Shop: etrailer Hitch Pin Alignment Collar for Hitch Accessories - 2" Hitches
- Shop: Suspension Enhancement
- Q&A: 7-Way Trailer Plug Adapter or Compatibility with Lance Slide-In Truck Bed Camper
- Shop: Brake Controller
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Search Results: trailer hitch
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Shop: Roof Rack
- Q&A: My Vehicle has a 4-Pin Trailer Plug, but Trailer has 7-Pin Trailer Plug
- Search Results: trailer jack
- Shop: Redarc Tow-Pro Liberty Brake Controller - Dash Knob - 1 to 2 Axles - Proportional
- Article: How to Measure for Trailer Hitch Drop
- Q&A: Replacing 6-Way on Trailer With 7-Way Connector
on Trailer Brake Controller
