The REESE Towpower 8506911 brake harness is presented as a compact, OEM-style connector that promises quick installation and reliable fit, with a positive locking plug, 12–18 inch lead lengths depending on model, and no-splice wiring for most late-model trucks. How long does it take to install, which controllers are fully compatible, and what vehicle-specific fit issues might arise? Consider torque, fuse placement, and harness routing — the review continues with step-by-step details.
Key Takeaways
- OEM-style plug with positive-locking connector provides secure, factory-like connection to compatible brake controllers.
- Compatible specifically with REESE Towpower and Tekonsha controllers; not suitable for all brands.
- Installation is quick and simple, typically taking 10–30 minutes with no splicing, soldering, or special tools.
- Cable length about 18–24 inches offers standard mounting flexibility but may not suit unusual configurations.
- Reliable signal transfer with time-proportional controllers; troubleshoot via pins, contacts, and vehicle fuses if issues arise.
Product Features and Compatibility
While designed for straightforward installation, the REESE Towpower 8506911 harness also offers a set of practical features and broad controller compatibility that merit attention.
The harness emphasizes wiring simplicity: OEM-style plug, factory under-dash fit, and a positive locking connector for secure mating. Connector quality is evident in molded housings, corrosion-resistant terminals, and a snug brake control plug.
Designed for easy wiring: OEM-style plug, secure positive-lock fit, molded housings, corrosion-resistant terminals, and a snug brake-control connection.
What controllers work? REESE Towpower and Tekonsha units.
Practical specs: cable length ~18–24 inches (factory routing dependent), standard pinout for time-proportional and time-based controllers.
Considerations: verify under-dash space, confirm controller model for pin alignment.
Installation Experience and Performance
The installation of the REESE Towpower 8506911 harness typically takes 10–30 minutes for someone with basic automotive experience, and it generally proceeds without splicing, soldering, or special tools.
The installer will find a factory under-dash connector, a positive locking plug, and a 12–18 in. lead to the brake controller port.
Installation tips: verify connector orientation, press until audible click, route harness away from sharp edges, secure with zip ties every 6–8 in.
Performance: consistent signal transfer, compatible with time-proportional controllers.
Troubleshooting issues? Check loose pins, dirty contacts, and vehicle fuse rating, then retest.
Pros, Cons, and Final Recommendation
For users seeking a simple, reliable connection between a vehicle and a brake controller, the REESE Towpower 8506911 harness delivers a straightforward solution: an OEM-style plug that installs in about 10–30 minutes, a 12–18 in. lead to position the controller conveniently under the dash, and a positive-locking connector that eliminates soldering or splicing.
Pros:
- Easy installation,
- OEM fit,
- 12–18 in. routing flexibility,
- Improved product reliability.
Cons:
- Limited to compatible controllers,
- No extra length for unusual mounts.
Q: Who benefits?
A: Owners valuing quick setup and solid user experience.
Final recommendation: buy if compatibility matches needs.
Frequently Asked Questions
Will This Harness Fit My Vehicle’s Aftermarket Wiring Plug?
Yes — compatibility depends on the plug type. For example, a truck owner matched the harness compatibility to his Ford F-150 by comparing connector shapes and vehicle models; verifying the OEM-style plug guaranteed a secure fit.
Is the Harness Waterproof or Weather-Resistant?
No; the harness is not specified as waterproof. The reviewer notes harness durability suited for typical weather conditions but advises sealing connections or using additional protective measures for prolonged exposure to moisture, salt, or heavy environmental stress.
Does It Include a Warranty or Return Policy?
Straight away, buyer beware: manufacturer warranty details and return policy vary by retailer and are not universally included; customers should verify warranty details and return policy at purchase, keeping receipts and checking seller-specific terms.
Can I Use This Harness With Electric Over Hydraulic Brakes?
No; the harness is intended for electric trailer brakes and brake controllers, not for electric over hydraulic brake actuators. It won’t interface directly with hydraulic pump or actuator control systems without additional dedicated converters or modules.
Are Replacement Plugs or Pins Available Separately?
Yes, replacement plugs and pins are often sold separately. Detailing parts, matching connectors, ensuring wiring compatibility: sourcing OEM-style replacement components, checking vendor catalogs, confirming part numbers, and verifying fit before purchase.
