Hayes controllers have an exclusive four-wire connector that when used with a vehicle-specific wiring harness enables the brake controller to essentially be plugged in and ready to go.
Compatibility: Hayes Quik-Connect ® Brake Control Systems
Plug-In Type: Snap-In
Plug Style: 1
Requires Adapter Harness: No
Estimated Install Time (Hours): 1.5
Features
- Simply Snap Together
- No Splicing Required
- Installations Are Fast And Easy
Before You Order
Verify part number 81785HBC exactly Match the listed product details to the part you are replacing before ordering. Compare dimensions, specifications and fitment information with your RV or component.
Frequently Asked Questions
What part number should I verify before ordering?
Verify 81785HBC on your existing part, documentation or equipment label before ordering.
How should I confirm this part fits?
Compare the listed part number, dimensions, specifications and fitment details with your existing component. Do not rely on appearance alone.




