Okay, I did my homework and got on the RVi2 website. Looks like the Brake away is pretty easy to install. I like the Ready Brake system better, but after poking around last night, I think running the cable through the engine compartment will be beyond my skill set, where as running a single electrical wire is much more forgiving in the routing ( not as much concern for tight bends, etc. ). This wouldn't be a concern in a larger vehicle where there was a little more space under the hood, but in the Fit, there is just no room in there!
The other nice feature with the RVi2 is I get a brake monitor and the option for tire sensors.
That said, if anybody has any Honda Fit specific advice on installing either of these, I'm all ears.
Thanks again