How to Install a Battery Charge Line for a Flat Towed Vehicle with 4-Way Connector
Question:
I have a 4-pin round connector on my towed Jeep. I would like to use the existing wires and add a charging circuit. I assume that would take me to a 6-pin connector. Do you have a kit that would let me use my existing 4-wire installation and add a charging circuit? I have a 7-to-4 cable that came with the motorhome we bought but the Jeep we bought has the 4-pin connector installed.
asked by: Mike M
Expert Reply:
I have a way to use the existing 4-way wiring but you are correct it does involve changing to a 6-pin on your Jeep. In order to add a charge line to your setup the best solution will be to use the Roadmaster 7-Wire to 6-Wire Flexo-Coil Kit item # RM-146-7. This kit includes a 6-Way round connector that you will install on your Jeep. You would just need to cut off the existing 4-Way connector and connect the wires to the 6-Way. You won't be able to use your 7 to 4 cable with this set up so the kit is the best way to go. It also comes with a bracket that'll make installing the 6-way easier and cleaner.
I have attached an image from the instructions manual to help you get it set up. Just be sure to match the wires up by function using a circuit tester like item # PTW2993.
With the 6-Way in place on your Jeep you can use the included adapter cord to connect it with the 7-Way on the RV. The center pin on the 6-Way is wired for 12V power so you can then use the Roadmaster Battery Charge Line Kit item # RM-156-25, you were looking at, to allow up to 15 amps from the RV's battery to be used to maintain the charge on the battery in your Jeep.
(click to enlarge)
Products Referenced in This Question
Roadmaster 7-Wire to 6-Wire Flexo-Coil Kit
- Accessories and Parts
- Tow Bar Wiring
- Adapters
- 7 Round - Blade to 6 Round
- Coiled Cord
- Roadmaster
more information >
Product Page this Question was Asked From
Roadmaster Battery Charge Line Kit for Towed Vehicles
- Accessories and Parts
- Tow Bar Wiring
- Battery Charge Line Kit
- Roadmaster
more information >
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