7-Way Trailer Wiring Parts and Instructions for a 2012 Buick Enclave

Question

Question:

I am thinking about a 2012 Buick Enclave purchase. As you are the BEST, I have seen your parts and videos, even for connecting my Tekonsha brake contorller I hope, like the one in the video, it doesnt have to be mounted flat. My questions relate to the trailer end. I see from your video how to connect the lights but, after the hitch is mounted... 1 what e-Trailer pigtail do I use to go from 4-way to a Bargeman-type 7-way socket ? 2 where is the trailer-end of the Enclaves Trailer Towing Provision harness so I can hook up the other e-Trailer pigtail wires? 3 How do I mount the e-Trailer 7-way socket to the Hidden Hitch? I am thinking Hidden Hitch so I can put the stock cover back on when I do not have the drawbar in place. Lots of Forum comments say any other brand sticks out 1/2 to 1 too far to put the cover back on. Thanks!

asked by: Mike T

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Expert Reply:

The first thing you will need to do to install a complete 7-Way trailer wiring harness on a 2012 Buick Enclave without factory tow package wiring, is install a 4-Way trailer wiring harness, part # 118450, if the vehicle does not already have a working 4-Way connector.

Next, you will need to install an electric brake controller installation kit, # ETBC7, to complete the wiring. Installing this kit will require you to hard wire the 12 volt power wire, brake controller output, power, ground and brake switch wires and the reverse light wire if needed. We have detailed instructions, see link, that explain how to run these wires. We also have an installation video featuring the # ETBC7 kit on a Dodge Nitro. The vehicle is different but the wiring principles are the same.

One other thing you will need to complete the brake controller installation is a circuit tester, like part # PTW2993, to determine which wire to attach the red brake switch wire to, from the brake controller you select.

You can mount the bracket included in the # ETBC7 kit directly to the trailer wiring mounting bracket that is welded to the hitch, part # 75528.

If the vehicle comes with a factory 7-Way trailer connector, all you will need is the brake controller of your choice and the brake controller wiring harness, # 3026-P, see installation instructions.

For a brake controller I recommend going with the P2, # 90885, which is easy to use and adjust, and has all of the features of most high end brake controllers.

Finally, when installing the hitch you need to remove the stock cover on back, if it is not the OEM receiver hitch fascia cover which protrudes slightly more than the standard cover it will not fit back on with the hitch installed. You could purchase the OEM fascia cover and it will work with the hitch, but it will most likely need to be painted to match the color of your Enclave. Some of our customers have cut a square hole in their original cover to allow the hitch to protrude slightly through it, but this requires you to reach up underneath it to install the hitch pin and clip.

expert reply by: Robert G

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Answer 1

For your 2020 Forest River Geo Pro I recommend using the Adjustable Width Trailer Hitch Receiver #13703, this will fit most trailer frames; spanning from 22" to 72". This hitch will use the bolt holes on the frame of your trailer to mount,…

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Answer 2

For a trailer hitch for your 2012 Buick Enclave the Draw Tite hitch part #75528 is a confirmed fit and will work well. I attached an install video for more info on this. Then for trailer wiring all you'd need is the #118450 to provide you with a…

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Answer 3

When picking out a weight distribution you go by the loaded tongue weight of the trailer. This is the tongue weight of the trailer when it's fully loaded and ready to tow so like in your case when the storage is loaded on the front of the…

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Answer 4

I went out to our warehouse to take a couple measurements on the Draw-Tite Max-Frame Trailer Hitch Receiver #75528 that you referenced. I measured a distance between the bolt holes on the left and right side brackets to be right at 43-1/4 inches, on…

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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

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 8

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 9

You will have to go with a sliding hitch to allow the trailer to make tight turns. For a trailer 8 feet wide the only bed length that's going to allow 90 degree turns without a slider is a stationary hitch. That being said you have two options.…

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Answer 10

I did some checking and the hub/drum we offer that will work for you is the part #8-430-5UC3. This uses the same bearings as the 8-415 and will be an exact fit aside from the fact this is a non-ABS setup and the 8-415 came in an ABS setup and non-ABS…

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Answer 11

If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part #C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give…

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Answer 12

Lance does have a proprietary plug, but many customers see a standard 6-way or 7-way round and notice it doesn't fit their factory 7-way as well. I've attached an article to help if you have one of the 7-way or 6-way round connectors which we…

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