Recommended Charge Line for Motorhome and Towed Vehicle Battery Connection

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Question:

Im also looking for battery charge line to going from the RV to the toad battery. I would like a plug that will mount on the roadmaster baseplate. The plug needs to accept the wiring for the toad lights and the battery charging. I have a 7 pin on the RV. Can you also recommend a cable to connect the rv to the toad. Thanks

asked by: Jeff G

0

Expert Reply:

For your charge line, I recommend the Roadmaster Battery Charge Line Kit for Motor Homes # RM-156-75 and then for your towed vehicle # RM-156-25.

expert reply by: Jason S

0

Answer 1

When flat towing a vehicle with a tow bar like the Roadmaster Sterling All Terrain #RM-576 that you referenced, you will want to make sure the steering wheel on your vehicle is unlocked. Unlocking the steering wheel/front wheels will allow the towed…

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Answer 2

The wire that runs from the vehicle's battery to the 7-way trailer connector and then from the 7-way trailer connector to the trailer battery should be at least a 10 gauge. If you don't have any 10 gauge wire you can purchase part #10-1-1 by…

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Answer 3

The Roadmaster Battery Charge Line Kit for Motorhomes #RM-156-75 uses a 12 gauge wire and circuit breaker to route to the positive battery post in your motorhome and the number 4 pin in the included 7-way photo. The Roadmaster Battery Charge Line Kit…

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Answer 4

A diode is designed to stop the reverse flow of current in an electrical circuit. Therefore yes, a diode will prevent backfeed to your vehicle from the trailer's battery. The part you referenced part #RM-790 has a dual in, single out function…

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Answer 5

For a single diode to prevent current backfeed the part #RM-790 would be a great option.

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Answer 6

The Diode part #RM-690 is designed to only allow current to flow in one direction. You could use it to run the charge wire to each battery so that they couldn't drain or charge each other. And then from each battery run a wire to wherever you…

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Answer 7

The Roadmaster Single Park Light Diode #RM-690 can withstand 85 continuous amps at 12 volts. As long as your 12V alternator doesn't exceed this power output the diode can indeed be used for your application without issue.

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Answer 8

You are getting backfeed from the Jeep through the wiring harness back to the motorhome. I spoke to my contact at TrailerMate and they told me the diodes included with this system are not designed to prevent backfeed. We have a solution that will…

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Answer 9

You do not need to have a diode between the two 12 volt batteries on your trailer and tow vehicle but it is not a bad idea either. The Roadmaster Single Park Light Diode part #RM-690 will work perfectly for this. The factory 12 volt pin on most 7-way…

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Answer 10

Not all RV's come with a fully functional 7 way connector, so you'll want to test your 7 way trailer plug blade at 1- o'clock position when looking at the plug face. If this pin is not receiving power from the trailer battery then…

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Answer 11

The Roadmaster Battery Charge Line Kit for Motorhomes #RM-156-75 connects directly to the battery on your motorhome though it is wired through a circuit breaker, which comes with the kit. Please keep in mind you will need Roadmaster Battery Charge…

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Answer 12

I do have a solution for you, however you won't be able to run a charge line from the 5th pin on the Hopkins Heavy-Duty Trailer Coiled Wire Adapter #HM47025 that you referenced. The 5-Way on this adapter will plug in just fine to the 4-Way on…

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Recommended Charge Line for Motorhome and Towed Vehicle Battery Connection

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