Should 12 Volt Circuit be the Center Pin or 1 Oclock Pin in a Vehicle Side 7-Way Trailer Connector
Updated 03/18/2015 | Published 03/17/2015 >
Products Featured in This Question
Question:
I am planning the wiring for my RV and Honda Element Toad and want to use the standard configuration as far as possible for future interchangeablility. I will use a 7-way blade connector. My question is one of convention. For my 12V charge line, would I be better advised to use the center pin or the 12V line at the 1:00 position? There will be 20A breakers in the RV and in the toad for safety.
asked by: Coyle S
Expert Reply:
I would stick with the standard 12 volt circuit at the 1:00 position rather than use the center pin, which is normally used for reverse lights. Please note that the 12 volt circuit on a trailer connector, no matter which pin it is associated with, will not be able to charge up a 12 volt vehicle battery (if that was your plan). It can only maintain the charge level of the battery.
So if you had something using power from the Toad battery while flat towing it then the drain would be greater than the charge coming in in all likelihood.
Also we usually recommend a 40 amp circuit breaker, # PK54540, for the 12 volt circuit.
Product Page this Question was Asked From
Pollak Metal 7-Pole, RV-Style Trailer Socket - Vehicle End
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- 7 Blade
- Plug Only
- Pollak
more information >
Continue Researching
- Shop: Vehicle Tow Bar Wiring
- Shop: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord
- Shop: Hopkins Custom Tail Light Wiring Kit for Towed Vehicles
- Video: An In-Depth Look at the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Video: Install: Roadmaster Universal Hy-Power Diode Wiring Kit on a 2021 Toyota Tacoma
- Search Results: rm 15267
- Shop: Roadmaster Battery Charge Line Kit for Towed Vehicles
- Article: Trailer Wiring Diagrams
- Q&A: Testing the Center Pin On a 6-Way Trailer Connector
- Q&A: Function of Center Pin on a 7-Way Trailer Connector
- Shop: Roadmaster Battery Charge Line Kit for Motorhomes
- Search Results: rm~15267
- Q&A: Can 2013 Fiat 500 with Separate Taillights be Wired for Flat Towing with Diodes for Combined
- Q&A: Is a Converter Needed For a Flat-Tow Wiring Harness On a 2020 Toyota Tundra
- Search Results: rm15625
- Video: An In-Depth Look at the Roadmaster Battery Charge Line Kit for Towed Vehicles
- Video: Installation: Curt Custom Tail Light Wiring Kit for Towed Vehicles on a 2024 Jeep Wrangler Unlimited
- Video: DIY Install: Roadmaster Battery Charge Line Kit for Towed Vehicles on your 2018 Toyota Tacoma
- Q&A: Which is Better Roadmaster or Blue Ox Tow Bar
- Search Results: base plate for tow bar
- Shop: Base Plate for Tow Bar
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Best Vehicles to Flat Tow Behind an RV
- Q&A: Recommended Parts for Flat Towing a 2025 Ford Maverick
- Shop: Vehicle Tow Bar Brake System
- Search Results: vehicle tow bar wiring
- Search Results: tow bar
- Shop: Blue Ox Avail Non-Binding Tow Bar - RV Mount - 2" Hitch - 10,000 lbs
- Video: Breaking Down the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)

