Hitch, Wiring Harness, and Brake Controller Recommendation for 2007 BMW X3

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Question:

2007 BMW X3 What do you recommend for hitch, wiring harness and brake controller? Trailer currently has 7 pin connector.

asked by: Jerry

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Expert Reply:

When it comes to a hitch for your 2007 BMW X3, I recommend going with the Curt Trailer Hitch Receiver, # 13573. This hitch will provide you with a 2 inch receiver opening, 350 lb tongue weight and 3,500 lb towing capacity, and is our most economical hitch option for your X3. I have attached a video of this hitch being installed on a 2009 X3 for you.

I'm assuming that your X3 isn't currently equipped with any trailer wiring so you will want to start out by installing the Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector # C59236.

In addition, you will also need to install the Universal Installation Kit, # ETBC7. This kit includes everything you need to install an electric trailer brake controller and 7-way connector. I have included a picture, as well as a help article, for you.

Last, but not least, is the brake controller. For this I recommend the Tekonsha Prodigy P3, # 90195. This is a proportional brake controller that senses the amount of braking the tow vehicle is applying and applies a proportionate amount to the trailer brakes. The P3 is also our best selling brake controller because of how well it works and how easy it is to setup.

expert reply by: Leah S

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Answer 1

I have a video that will work for you, however, we have not had the chance to install a trailer hitch on a 2008 BMW X3 yet. We have been able to install the Curt Class III Trailer Hitch, #13573, on a 2009 X3. The install for the 2009 will be the same…

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Answer 2

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 3

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 4

If the trailer wheels scrubbed (dragged and scrapped the ground instead of rolling) when jack knifed then it could have thrown something out of alignment or damaged something. First, inspect the suspension. Look for any elongated holes where…

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Answer 5

I've never heard of an actual third brake light connector on a camper shell to plug in on a truck and we don't carry any parts to do that. The light generally needs to be hardwired into the truck's brake light circuit. The issue with this…

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Answer 6

If you are needing the hub and drum assembly then you will want to go with the Dexter Trailer Hub and Drum Assembly #8-201-5UC3-EZ but if you are just looking for an idler hub then you will want part #8-213-5UC1 instead. These come with the correct…

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Answer 7

From what I could find it looks like your 122R (red) and 122Y (amber) lights measure 3.75" x 1.70" x .81". We don't have any replacement lense directly for the GLO-BRITE lights but we do have some similar lights that you could use…

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Answer 8

The manual lockout on your Atwood 85778 surge brake coupler is there so that you can back up the trailer without the brakes locking up on you. Yes you can safely tow your trailer with the broken manual lockout, you just have to make sure you…

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Answer 9

Seal 171255UC has an inner diameter of 1.719 inches and outer diameter of 2.565 inches. A seal that has those dimensions would actually be #58846. I've added a link to a video review of this seal for you to take a look at.

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Answer 10

Brake systems are not dependent on the hub bolt pattern. So you can use the Electric Trailer Brake Kit #AKEBRK-7-SA for 12 inch hub/drums or #AKEBRK-35-SA for 10 inch hub/drums. Then use #10-1-1 wire sold by the foot for your brake magnet wiring.…

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Answer 11

While we may have an option for you, we do not have the exact specs on your Allis grease seal part number 5013 29772. However, with the 1.6" ID and 2.5" OD measurements you provides, that is very close to our #58846. This particular grease…

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Answer 12

Normal operating temperatures for drum brakes range from 150-400 degrees F. During certain stopping conditions the brake heat can exceed 600 degrees. The effectiveness and stopping power of the brakes is significantly reduced at these higher…

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Hitch, Wiring Harness, and Brake Controller Recommendation for 2007 BMW X3

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