How to Wire the Trailer Breakaway Kit Battery Charger Part # 20011

Question

Question:

My cargo trailer has its own aux 12v battery that is maintained by a solar system while disconnected from the tow vehicle. Can this Breakaway Kit Charger be connected to that 12v battery and keep the Breakaway battery charged? If so, does the black wire connect to the aux battery Negative side, Red to the Breakaway battery and blue to Breakaway switch? Thanks

asked by: Jerry

1

Helpful Expert Reply:

To answer your question yes, the Trailer Breakaway Kit Battery Charger part # 20011 can be used to charge your breakaway battery while drawing power from the 12 volt auxiliary battery on your trailer. However, most local and state regulations require that the breakaway battery receive a charge from a battery not mounted on the trailer therefore, I recommend using the Trailer Breakaway Kit Battery Charger part # 20011 to pull power from the vehicle's battery via the 12 volt pin on the 7-way in order to charge your breakaway battery.

The black wire will need to either be connected to the 12 volt pin on the 7-way or the positive side of the 12 volt auxiliary battery on your trailer depending on which of the above options you go with. The red wire goes to the breakaway battery and the blue wire goes to the breakaway switch.

expert reply by: Conner L

1

Answer 1

The Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End #PK12706 will match the colors and locations of the attached photo. I've also attached a wiring article to assist further if the colors don't match functions correctly…

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Answer 2

If you wanted to run a maintenance charge to your trailer's battery you'll need to run wire directly from the battery's positive terminal to the 12 volt power circuit of the 7-way. You'll want to use 10 gauge wire like part #10-1-1.…

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Answer 3

On this page (typically below the product links) there is a helpful link section that will have the install instructions fo the Hopkins Breakaway kit part #20400 that you referenced. I also attached an install video that shows the kit installed as…

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Answer 4

Yes, you can use the Hopkins Trailer Breakaway Kit Battery Charger, #20011, with the motorcycle battery on your motorcycle trailer. Like you said, you would simply tie-off the blue wire since it will not be used. This charger will maintain the charge…

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Answer 5

In order to install a two wire breakaway switch like the Replacement Breakaway Switch with Cable and Pin part #3802348 to an existing trailer battery you will want to attach one of the wires to the brake output signal (usually blue) on the trailer…

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Answer 6

I think your plan would work just fine. You'll need to make sure the breakaway battery though is charged at all times in the event of a trailer disconnect. Typically charging it off of the tow vehicle is adequate for this. For a breakaway battery…

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Answer 7

Battery chargers do get hot, especially if plugged in for long periods of time. If it is so hot that you can't even touch it then that would be a problem, a short somewhere either with the wiring or internal on the charger. On the wiring make…

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Answer 8

With the brake controller gain turned all the way up, you should be seeing closer to 12-volts at your trailer connector. You are losing voltage somewhere between the brake controller and the trailer connector. I am assuming that by electric brake…

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Answer 9

When installing marker lights we recommend using 18 gauge wire like #SWC97FR. This is stranded wire and is what we typically use when wiring marker lights like the #MCL32ABB for example. LED marker lights pull very low amperage so 18 gauge is likely…

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Answer 10

Yes, the 12 volt accessory circuit of your trailer wiring would be able to keep a 10 amp breakaway kit battery topped off like the part #3802311. Usually the 12 volt accessory circuit of a 7-way is protected with either a 30 amp or 40 amp fuse.

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Answer 11

The black wire from the break away switch will connect to the blue wire from the break away box, as shown in the provided diagram. By 'brake wires' I'm assuming you're speaking of the wires connected to the brake magnets on your brake…

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Answer 12

If the truck wiring is working with other trailers then the issue is definitely on the trailer side. Although the hitch ball does provide an extra ground source, you do not want that to be the main ground for your trailer wiring. You should have a…

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How to Wire the Trailer Breakaway Kit Battery Charger Part # 20011

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