Can 12V Power Lead for RV Upgrade Wiring Kit Go to Both 12V Power and Aux Pins on 7-Way

Question

Question:

7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires Item # ETBC7L.. can the 12v yellow auxiliary wire and the 12v black wire that connects to the 12v battery be combined so that I would have power for aux items on the trailer and things like the backup lights?

asked by: Tim

0

Expert Reply:

The wiring that comes with the 7-Way RV Upgrade Kit # ETBC7L is only meant to carry the 12V power for 1 function. Since you're wanting 12V power from your vehicle battery to go to 2 functions you need the Universal Installation Kit # ETBC7 instead.

Normally for the universal kit we will route 1 wire for the 12V power and another to the brake controller but you can route that 2nd wire from the battery to the aux yellow wire instead. This will help to keep you from accidentally overloading the 12V power and further protect the wiring on your trailer.

expert reply by: Jon G

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7-Way Wiring for RV Upgrade and Universal Wiring Kits
(click to enlarge)

Answer 1

If you have a vehicle specific wiring harness for a brake controller then that would indicate that you have a factory tow package and subsequently would already have a 7-way at the back of your vehicle. The universal 7-way connector #ETBC7 is meant…

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Answer 2

The adapter that is used in the Universal Installation Kit #ETBC7 is the Hopkins #37185. This unit has 16 gauge wires for the Green, Yellow, and Brown wires and then 12 gauge wires for the Blue, White, Black, and Purple wires. I have confirmed this…

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Answer 3

Yes, the adapters we have do work well and I have a couple options for you based on the type of brake controller you will want on your 2023 Toyota RAV4 Prime. First is the easiest to install. The 7-Way RV Upgrade Kit #ETBC7L will accept the 4-way…

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Answer 4

The black and white wires on the 7-way adapter of the part #ETBC7 are 10 gauge like you are looking for.

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Answer 5

Hello Scott. The #ETBC7L kit is exactly what you need to upgrade your 4-flat to a 7-way and use the Curt Echo Controller. Since you have a boat trailer with a reverse lockout, you will need to locate the reverse light circuit on your vehicle. I do…

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Answer 6

If you purchased a 4-Way/7-Way Hopkins adapter like part #37185 so that you can use the Curt Echo Mobile Trailer Brake Controller #C51180 then you are correct about only needing to connect the 12V power wire for the brake controller (in addition to…

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Answer 7

The trailer brake output or blue wire is not connected on a 4 to 7-way adapter like the 4 to 7-Way with 4-Way Adapter part #ETBC7L when using a wireless trailer brake controller like the Curt Echo Wireless Brake Controller part #C51180. The two four…

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Answer 8

We actually have a version of the #ETBC7 that we put together specifically with the Curt Echo Mobile brake controller part #C51180 in mind with the #ETBC7L which comes with just the components needed for the Echo. The ETBC7 comes with the same…

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Answer 9

I would be happy to help! The 4-way connector #TK69FR you purchased for your 2021 Toyota Sienna cannot have a reverse light circuit, as it does not have enough circuits in the connector for a 5th function. Instead the #ETBC7L 7-way connector you…

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Answer 10

Hey Albert, yeah finding the reverse light circuit on a vehicle can be somewhat challenging but I have some tips that will hopefully be helpful. So first thing to do is remove the interior panels on the rear hatch where the reverse lights are like…

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Answer 11

When installing the #ETBC7L on your 2021 Toyota RAV4 you don't have to make the connection to the reverse light circuit or auxiliary power circuit with the yellow wire if you don't want to. If you want to splice into the reverse light circuit…

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Answer 12

To run a charge line to your battery you will first need to install a 7-Way on your trailer. This can be done using the Epicord 7-Way Molded Trailer Plug with Junction Box #277-000141. The Black wire in the junction box is the one that will carry the…

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Can 12V Power Lead for RV Upgrade Wiring Kit Go to Both 12V Power and Aux Pins on 7-Way

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