CR-V Towing Question

I cannot answer for the "supplemental brake system" but by that I presume you mean a Brake Buddy or similar system that sits in front of the drivers seat and actuates the brake pedal. I use a Air Force One system. However, I do tow a 2007 Honda CR-V. And, while installing a charge line is a fine fix, I've found the installation of the dash mounted switch kit the simplest way around the fuse problem. As mentioned by others there is a handy-dandy blank plate just to the right of the steering column of my 2007 CR-V (I cannot answer for newer models. I popped that plate out, drilled a hole in the center and mounted a "rocker" type switch in it (looks NICE). The kit for plugging into the fuse location and running wiring to the switch can be found advertised in most any RV magazine. I think mine cost around $50. BEST money I ever spent. This old body does not contort into the pretzel shape required to pull that *&%$# fuse either. Installation of the kit requires one to twist just the ONE time to install the fuse "end" of the kit and like the raven said...Never More. Hook up your car, flip the switch and your ready to go. Easy Breezy.