don_a wrote:
How does the "Invisibrake" work from the cable harness and back into the black box? Why do they hook it into the vacuum line? There shouldn't be much vacuum if the engine is not running. Or is there an air pump in the black box or a geared motor used to pull the cable? How does this work? I would think an electrical motor would not respond fast enough like an air cylinder would. If it uses air, where is the tank and is it pumped up and ready to go at the first tap of the brakes?
Does it run off the towed battery? Someone spoke of a charging cable. Why would you not use a charging cable already in place?
All your questions should be answered here in the
Invisibrake Install Instructions.