Recommended Brake Controller and Wiring for 2003 BMW X5
Question:
Can you please give me complete information on how to locate and wire your Tekonsha Voyager Brake Control code 39510 on my 2003 BMW X5 3.0 for my 4 way flat boat trailer. Thank you very much.
asked by: Tuan-Phan
Expert Reply:
Don't worry I can help, but for a boat trailer with a 4-way you shouldn't need a brake controller because they do not have electric brakes. A standard brake controller is not recommended to install on your vehicle due to low voltage brake light switch. A standard brake controller like the Voyager will not be able to be used on your X5.
If your planning on adding electric brakes to your boat trailer then you will want the Curt Echo brake controller # C51180 and the 7-way upgraded wiring kit # HS381-9000 (this will adapt your 4-way on the trailer to a 7-way for the Echo wireless brake controller). Then you will need to install # 119250KIT and # ETBC7 on your vehicle but you will only need to run the power wire (black) and circuit breaker on the # ETBC7 in addition to the 4-way harness that will plug into the new connector. You will also want a break-away battery (mounts on the trailer) like # 20099 to supply power to the brakes in an emergency.
I have a few installation videos that I will be attaching along with all the products mentioned to this page for your convenience.
Products Referenced in This Question
ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat Trailer Connector and Installation Kit
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Converter
- Universal Fit
- 4 Flat
- Tekonsha
more information >
Hopkins Engager Push-To-Test Trailer Breakaway Kit w/ Built-In Charger - Side Load - 7" Wire
- Trailer Breakaway Kit
- Kit with Charger
- Side Load
- Single-axle
- Tandem-axle
- LED Tester
- Hopkins
more information >
Curt Echo Wireless Brake Controller - 7-Way Plug Mount w/ Bluetooth App - 1 to 2 Axle - Proportional
- Trailer Brake Controller
- Proportional Controller
- Hidden
- Up to 2 Axles
- Smartphone Display
- CURT
more information >
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Accessories and Parts
- Trailer Brake Controller
- Installation Kits
- etrailer
more information >
Wiring Kit for Hydrastar Electric Over Hydraulic Actuators
- Accessories and Parts
- Brake Actuator
- Disc Brakes
- Hydraulic Drum Brakes
- Wiring
- Hydrastar
more information >
Product Page this Question was Asked From
Tekonsha Voyager Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Manual Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- Indicator Lights
- Up to 90 Degrees
- Tekonsha
more information >
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on Trailer Brake Controller
