Hayes Brake Controller - Proportional Controller - HA81790 Review

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Review of Hayes Brake Controller HA81790

Today, we'll be reviewing Part Number HA81790. This is the Hayes Genesis Trailer Brake Controller for 1 to 4 axles. This is a proportional brake controller. This brake controller activates your trailer brakes in proportion to your vehicle's braking action. So that means it's going to automatically adjust the trailer's braking based on deceleration of the vehicle, and it activates immediately, so there's no pausing like when using time-delayed brake controllers. Inside, there's internal sensors that automatically levels on its own, and that's dependent upon deceleration even if the controller is not mounted level. You can position this anywhere from 35 degrees to 90 degrees in the vertical plane.

Here on the front, it's going to feature adjustable gain settings. It's going to let you determine the power output sent to the trailer's brakes. You can set it higher if towing in hilly terrain or with a fully loaded trailer, or you can back off and lower the power when using or towing a lightweight or empty trailer. It's going to offer 5 Boost settings that let you adjust initial braking power and aggressiveness, has a very easy-to-read LED display on this side here. Over here is the manual override. It's got the easy-to-read digital display that's going to communicate brake power output, boost setting, and error codes.

Again, to adjust between all those, it has these easy push buttons here on the front. Now, this does feature some built-in safeguards that are designed to protect your vehicle and trailer. Manual override is going to illuminate the brake lights on the tow vehicle and trailer. It has a current limiter that's going to protect vehicles from shorts in the trailer wiring. It also has a hazard flasher immunity which means that its going to prevent the pulsing of the brakes when flashers are activated. Again, we have the slide-bar manual override. Very easy to use.

It's a pretty quick and easy installation. It does come with the mounting bracket and the hardware. Hayes also offers plug-in, vehicle-specific brake controller adapters, those are sold separately, that can be used for certain applications to reduce installation time. You can check out our website and see if we have one that's going to fit your application. This is designed to be used with trailers up to 4 axles or 8 brakes, and it can be used with the electric and electric-over-hydraulic braking systems. Go over the measurements real quick of the break controller.

It's going to give us an overall length of 5 and 1/8 inches, an overall width of 3-1/4 inches, and then an overall height of 1-1/4 inches. You also see here on the side that it has multiple options for the mounting bracket. That's going to do it for today's review of Part Number HA81790. This is the Hayes Genesis Trailer Brake Controller.

Questions and Comments about this Video

Steve C.

Beware!! ADAPTER PLUG for the vehicle is NOT provided. It cannot be installed without the adapter plug. 52581

Reply from Rachael H.

The universal wiring harness # HA81789 - HBC is available as a separate item and is sold separately. IF you would like to see if we have a vehicle specific plug for your vehicle please use our fit guide to find the compatible parts. 47086

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Cole B

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