Is A Brake Controller Needed With The Stealth Hitches Towing Harness To Activate Trailer Brakes
Updated 01/12/2026 | Published 09/02/2024
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Question:
Hello, I have a 2021 BMW X5 M50i and looking for a hitch to haul a trailer. Ill be purchasing the Stealth hitch and a passive wiring harness. Do you know if i use the passive wiring harness will it apply a brake signal to my trailer? Or do I need to purchase a brake controller?
asked by: Gabriel C
Expert Reply:
Hi Gabriel,
The Stealth Hitches Trailer Wiring Kit # SH58VR would still require a brake controller in order to activate the brakes on the trailer. You could go with the Tekonsha Prodigy P2 Trailer Brake Controller # 90885 along with circuit breaker # 9506P and some 10 gauge wire # 10-1-1 to run between the 7-way and brake controller and from the brake controller to the battery.
Product Page this Question was Asked From
Curt Echo Wireless Brake Controller - 7-Way Plug-in w/ Bluetooth App - Up to 2 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Plug-In
- Smartphone App
- Under-Dash
- Up to 2 Axles
- Smartphone Display
- Multiple Trailers
- CURT
more information >
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on Trailer Brake Controller
Lazer S.
1/12/2026
Hey Gabriel, how did things go with the Stealth hitch and wiring setup on your X5? Did you end up using the Prodigy P2 brake controller or try another option? Your update could make it easier for others setting up a similar trailer connection.