Recommended Hitch, Wiring, And Brake Controller For A 2012 BMW X535i

Updated 02/21/2024 | Published 02/20/2024

Products Featured in This Question

etrailer Rubber Hitch Cover for 2" Trailer Hitches - Qty 1

(3314)

$11.60

Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"

(197)

$275.23

Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires

(3476)

$118.67

Hook Probe Circuit Tester

(66)

$14.36

Redarc Tow-Pro Liberty Brake Controller - Dash Knob - Up to 2 Axles - Proportional

(2873)

$190.00

Universal Wiring Harness for Redarc Tow-Pro Trailer Brake Controllers

(429)

$27.00

Question:

I have a 2012 X535i. Do you sell a class III trailer hitch kit that includes the wiring harness and brake booster?

asked by: Ron P

Helpful Expert Reply:

Hey Ron,

We don't offer an all-in-one kit but we do definitely have what you need. For the hitch you'll want the Curt Trailer Hitch Receiver # 13077. For the wiring you'll need the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit # 119250KIT. This will give you a 4-pole connector to attach to a trailer without brakes.

In order to connect to a trailer with brakes you'll need the # ETBC7 along with a no-drill mounting bracket # 18136. With the hitch crosstube sitting behind the fascia you'll likely need to stick the bracket in a vice and bend it to clear the fascia and have it sit right to connect the mounting bracket for the # ETBC7. This is going to have a wire that you'll run up to the cab for your brake controller so that you can activate the brakes on the trailer.

For the brake controller you'll want the Redarc Tow-Pro Liberty Brake Controller # RED24FR. This brake controller has the smallest footprint on the market so that you can keep a factory look. This will require a wire harness # RED69FR with a blue wire that will splice to the wire that you ran for the # ETBC7 up to the cab. The red wire will need to splice to the cold side of the brake light switch, which you can find with a tester # PTW2993 by checking the wires on the brake pedal for the one that only has power while the pedal is depressed.

These installs are all a bit time consuming but not a huge challenge if you've somewhat handy. If you'd prefer to have someone else complete the installs then I recommend using our installer locator, which I've attached a link to below.