Wiring Location For Trailer Brake Controller On a 2021 Buick Enclave With Factory Trailer Package

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Question:

do you have a wire harness to connect a Drawtite Electric Brake Controller to a 2021 Buick Enclave WITH factory trailer package. thanks

asked by: Mark N

0

Expert Reply:

Your 2021 Buick Enclave has a wiring pigtail and not a connector for wiring a Redarc Tow-Pro Elite Trailer Brake Controller # RED44FR. The 4 wires are located below the OBD2 port behind the side kick plate(see Image). This is where you will be able to attach the included pigtail using the Heat Shrink Butt Connectors # DW05744-5 and # DW05745-5. You will only need 2 of each connectors for the 4 wires that connect to the brake controller pigtail.

expert reply by: Bud M

0

Wiring For Trailer Brake Controller On 2021 Buick Enclave
(click to enlarge)

Donna O.

3/27/2024

I can’t find the trailer wiring shown in your picture in my 2021 Buick Enclave. You have a still picture of it and we need to know if you had to unwrap that wire harness from other wire harnesses. It is so hard to find.

Bud M.

3/28/2024

@DonnaO The wiring is just wrapped up on itself. Do understand this can easily be different on different vehicles even of the same year depending on how it was installed from the factory. The best recommendation I can make is following the main harness and feeling for any places where you can feel some additional wires which may have gotten rolled up on the larger harness as well. It could have also gotten tucked down below the flooring since it is such a short strand of wiring that is not secured off in any way.

Donna

4/1/2024

@BudM I did find the wires but no power going to the 12 volt red wire. Says in my manual have technician connect 12 volt wire to battery block??? We can’t find anything under the hood to connect.

Donna

4/2/2024

@BudM It was a blown fuse in rear of car for trailer brake.

See All (4) Replies to Donna O. ∨

John H.

12/16/2024

The 2021 Enclave, without OEM trailer package, did not provide the brake apply signal on the white/blue wire. I'm trying to get the dealer to see if this can be reprogrammed.

Answer 1

As far as the mounting bracket, you can absolutely screw it directly to the hitch if you want. We do this frequently in our own installs and it will not compromise the strength of the hitch in any way. Now putting a few holes in the hitch does open…

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Answer 2

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Answer 3

I do not recommend drilling a hole in a trailer hitch like the Draw-Tite #76154 that fits a 2019 Nissan Titan as not only will this void the warranty but hitches have not been tested to be used after modification. A Class III, 2" hitch like the…

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Answer 4

I think you are going in the right direction. I would definitely replace the 14 gauge wire going to the trailer brake magnets with 10 gauge wire or larger. Usually larger than 10 gauge is hard to get into the trailer connector though. I would also…

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Answer 5

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 6

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 7

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 8

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Answer 9

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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Answer 10

Yes, it will work. You'll just need to cut the Lance 6-pin connector out and rewire it into the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector item #e99011. Here are the individual functions of that Lance 6-pin:…

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Answer 11

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 12

Since wire color codes are NOT universal, we always recommend wiring by function, rather than wire color. If you look at the Trailer Wiring FAQ article I have linked you to, you can see some diagrams showing the proper way to wire a vehicle and…

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Wiring Location For Trailer Brake Controller On a 2021 Buick Enclave With Factory Trailer Package

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