Is this hard to install?

It works wonderfully. I installed it in a 2008 GMC Acadia and yes it was hard to install. I am not sure I want to do it again. I'm pretty handy as an aircraft mechanic but I felt the set up was unusually tedious to install. Lots of wiring to do and the air actuator took a bit of figuring where I could mount it. It took me 3 evenings to install it.

Is the braking proportional? I have a trailer brake controller on my motor home. Will it work with that?

please go to this link,http://roadmasterinc.com/pdf/25-5040-00.pdf,it will explain a lot.it is not however truly proportional,and does not work with your brake controller.you set the max level of braking and when applying the MH brakes,it will ramp up to the preset levelhope that explain things,theo

I dont see how it works if it doesnt hook to the brake pedal can it really activate the master cylinder to engage the brakes or is it for electric b

There is a cable that runs from the Invisibrake box mounted in the tow vehicle. The cable runs under the carpet and attached with a pulley system to the back of the pedal. When the brake lights on the coach come on, the box pulls the cable thus activating the brakes. Please feel free to call us if you have any technical, install, or questions. Thank you,The Hitch Spot602-321-1703

If you're asking if it will work on a 2003 Wrangler, I would think so. Mine is installed on a 2002 Explorer. I have flat towed it over 2,000 miles with no problems. I absolutely love it.

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8700 Invisibrake Support Braking System with Emergency Breakaway System fits Towed Vehicles with Vacuum-Powered Brakes | 5-100 PSI Brake Pressure | Made in the USA

Product ID: 21117620

Details

Automotive Fit Type
Universal Fit
Brand
Roadmaster
Global Trade Identification Number
Manufacturer
Roadmaster
UPC
758306313118

⚡Direct battery connection with trickle charge

📏Compact 8"x8"x2" size

🚗Fits vacuum-powered brakes

€ 2585.39

Duties & taxes included

In stock

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Description

🚦 Invisible power, undeniable control—brake like a pro, even when towing.

ULTRA COMPACT DESIGN - Discreetly mounts under seats or panels, preserving every inch of your vehicle’s interior space.
BATTERY FRIENDLY TECH - Connects directly to your towed vehicle’s battery with smart trickle charging—never drains power.
PROUDLY AMERICAN MADE - Handcrafted in the USA with premium materials for durability and peace of mind.
SEAMLESS POWER BRAKING - Maintains your vehicle’s original power brake feel while towing—no compromises.
EMERGENCY BREAKAWAY SAFETY - Built-in breakaway system ensures your trailer brakes activate instantly in emergencies.

The Roadmaster 8700 Invisibrake Support Braking System is a compact, powerful brake controller designed for towed vehicles with vacuum-powered brakes. It energizes your power brakes to replicate your vehicle’s original braking feel, connects directly to the battery with a trickle charge to avoid power loss, and includes an emergency breakaway system for added safety. Made in the USA, it offers a discreet installation without sacrificing interior space.

Specifications

ASIN	B007HRTFIW
Automotive Fit Type	Universal Fit
Best Sellers Rank	#847,846 in Automotive ( See Top 100 in Automotive ) #324 in Trailer Brake Controls
Brand Name	Roadmaster
Customer Reviews	4.4 4.4 out of 5 stars (247)
Global Trade Identification Number	00758306313118
Included Components	Roadmaster 8700 InvisiBrake Hidden Brake System
Item Type Name	Roadmaster 8700 InvisiBrake Hidden Brake System
Item Weight	15.6 pounds
Manufacturer	Roadmaster
Manufacturer Part Number	8700
Manufacturer Warranty Description	Limited Lifetime
Model Number	8700
Number of Items	1
Orientation	Rear
UPC	758306313118

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