Where Do the Wires on the Universal Install Kit for Trailer Brake Controllers Get Installed?

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Question:

I am almost finished installing the 7-way Connector on a 2014 Audi Q5 and need help finishing to tow a TT with electric brakes. It is connected to the 4-way “lights kit”, with the white wire ran to ground, black wire ran to 30 Amp fuse then battery, leaving the yellow reverse wire and blue brake wire needing connection to their proper places. Each install video for the 7-way wiring kit shows the blue and yellow wires being “taped off” and not used. The specific video for my car shows the same. I have a brake controller with the proper adapter to “plug and play” behind my dash panel. Can you help me find the proper place to run these remaining wires? Thanks in advance!

asked by: Bryce

0

Expert Reply:

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 to be used on vehicle's that don't have an existing 7-way and need to add one.

However if you were adding a 7-way then you'd need to route the blue wire to the output on your brake controller, and run the yellow wire to the reverse light circuit.

If you're trying to convey something different let me know and I'd be happy to help.

expert reply by: Bryce D

0

Wiring Diagram for ETBC7
(click to enlarge)

Tom T.

3/8/2024

I have a oem on my 2020 Kia telluride and need the 7 point for my boat trailer with electric brakes. The tech recommended the ETBC7nL is this correct --- since i have the 7 poin wiring?? thanks

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Bryce D.

3/12/2024

@TomT Yeah that's not right since the # ETBC7L does not have the brake output wire, whereas # ETBC7 does, so you'd need # ETBC7.

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Answer 1

Chris, I believe the extra 12v line you're looking at for the Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector #118290 is the power for the ModuLite unit. This isn't standard OEM which is probably why your original…

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Answer 2

Hey Johnnie, we do have a plug and play brake controller install harness designed to fit your 2019 Subaru Ascent with the part #3062-P. This plugs right into the back of your Tekonsha P3 brake controller part #90195 and under the dash of your Ascent.…

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Answer 3

Hello Robert. The reason our site is showing only the “without factory Tow Package” options is because this is all that is available currently. There was a plug-and-play brake controller adapter from Tekonsha, part 306200, that is compatible with the…

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Answer 4

Yes, it can. To add a 7-Way to your 2021 Subaru Ascent you will need the Tekonsha OEM Replacement Vehicle Wiring Harness item #118290. This will provide you a 7-way connector and all the wiring and hardware you will need to install it and connect the…

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Answer 5

First you will be able keep the Draw-Tite Max-Frame Trailer Hitch Receiver #76253 on your 2020 Subaru Ascent. It is rated for up to 750lbs of tongue weight and a trailer weight up to 5,000lbs. Be sure to verify your maximum capacities with your…

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Answer 6

As long as your 2015 Ford E-350 Van has a factory 7-way at the rear of it all you would need to install the controller is the harness part #3034-P. This adapter plugs into the connector behind your vehicle's dashboard. To reach the connector,…

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Answer 7

Hey Antoine, so the two kits you mentioned are actually really similar and honestly I would go with the part #ETBC7 if I were you. The #ETBC7L is basically the same thing minus a couple wires and breakers so you may as well get the kit that has…

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Answer 8

Hey Jon, yes to be able to tow a trailer with brakes all you'll need is the 7-Way RV Upgrade Kit for Trailer Brake Controller Installation #ETBC7L and the brake controller, the Tekonsha Prodigy RF Wireless Brake Controller #TK94FR that you're…

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Answer 9

I recommend tracing the wiring from the 4-pole connector back to see if it plugs into a connector or if it's hardwired to your tail lights before purchasing anything. The wire harness would get all the signals right at the tail lights if it was…

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Answer 10

If your trailer wiring 7-way has all of the taillight functions working and has the 12 volt power circuit complete like it sounds like you already did then the Prodigy RF part #TK94FR would easily fit. It basically can fit any vehicle that fits that…

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Answer 11

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.…

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Answer 12

I have added a photo detailing the wiring connections for the Pollack Heavy-Duty, 7-Pole, Round Pin conncetor, #PK11700, see link. This is a SAE J560 compliant connector. The wiring diagram for the vehicle side connector, #PK11720, is pictured also.…

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Where Do the Wires on the Universal Install Kit for Trailer Brake Controllers Get Installed?

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