Trailer Brake Controller And Wire Harness For 2003 BMW X5

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Question:

Which trailer brake do I need for a 2003 bmw x5

asked by: Herb G

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Expert Reply:

I recommend the Curt Echo Wireless Trailer Brake Controller # C51180 it is set up as fast as you can plug it into your vehicle and trailer ends. Then you control it via Bluetooth from an app on your mobile device.

The Redarc Tow-Pro Elite Trailer Brake Controller - 1 to 3 Axles - Proportional # RED44FR is a great choice for a brake controller if you want actual hardware and a knob to use instead of your mobile device.

Your 2003 BMW X5 has many options for trailer brake controllers and trailer wiring harnesses.
The easiest way to go from a 4-way to a 7-way is to use our 7-Way RV Upgrade Kit for Trailer Brake Controller Installation # ETBC7L. If you do not have wiring at all I would use the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit # 119250KIT. Then upgrade it with the # ETBC7L.

If you decide to use the Redarc Tow-Pro Elite you will use the Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat # ETBC7 instead of the # ETBC7L because the kit comes with wiring and accessories that are required for installation of the trailer brake controller. The # ETBC7L lets you use a brake controller that uses power from your trailer connector instead of wiring into your vehicle.

expert reply by: David B

0

Answer 1

Thank you for reaching out! For your application I highly recommend going with the etrailer Tongue Weight Scale for Campers and Utility Trailers - 2,000-lb Capacity #e99044. This is small so it's portable and it uses a standard scale style so…

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Answer 2

Vehicle rear axle suspension products like air bags and rubber jounce springs are intended primarily to help support the vehicle suspension when it is carrying a heavy and/or uneven cargo load within the vehicle. They are not designed so much for…

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Answer 3

This is a really good question. I sent it to our engineer and he told me that the gauge has a 3%,2%,3% margin of error. This means that in the first third of its range, it is +/- 3% of the actual tongue weight, the middle of its range it is +/- 2%,…

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Answer 4

If your current springs have 5 leaves then going to a 7 leaf spring will increase the height of the trailer a little and make the trailer more susceptible to sway. Regarding capacity if you go with springs rated higher than what is required it will…

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Answer 5

You will need the Red LED Trailer Clearance or Side Marker Light #328-K-52 or Amber LED Trailer Clearance or Side Marker Light #328-K-51 for your 2018 Forest River Sunseeker motorhome. These lenses have the same Top Command SAE-AP2-16 markings on the…

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Answer 6

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 7

The number you provided, "7753400" is a patent number which corelates to the Equalizer for E-Z Flex Suspension part #013-144-03. This is for a single equalizer but if you need the entire kit it's the Dexter E-Z Flex Suspension Kit part…

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Answer 8

The 40 amp fuse for your 2006 Chevrolet Silverado tow package is used for the 12 volt battery charge circuit. This fuse is located toward the front of the underhood fuse box closest to the front auxiliary positive post (see photo). There may be a…

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Answer 9

On a 2005 Chevy Silverado 1500, If you are facing the front of the truck looking at the power distribution box, there will be a post at the back left side and a fuse slot near it. It is that fuse slot that you will install a 30 amp fuse. I have…

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Answer 10

For your enclosed trailer application I have several suggestions for adding interior lighting that you can control directly via a switch. Since your current 4-pole trailer wiring does NOT include a 12V auxiliary power feed that could power inside…

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Answer 11

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 12

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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Trailer Brake Controller And Wire Harness For 2003 BMW X5

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