Whenever unsure just use a test light. One side of the brake is always live, ignition on or not. Just ground the test light on any good ground and push the point into the plug ends.98sub said:Hey, thanks Patrick. That sounds right because the yard man at the trailer rental place said the same thing. I am kind of anal and needed to get some confirmation. I really am greatful.
We rent a trailer for our summer vacations. Adventure Rentals in Ontario, CA requires an electronic braking system on their larger trailers. So it looks like I am all set to install the Prodigy.