I used to have the BuddyBrake, but I found the box cumbersome and on long mountain trips a drain on the battery. I purchased the ReadyBrake which I use with my Demco towbar and I am very pleased with the assembly. Super easy to hookup, no big box, no drain on the battery, just attach the two cables (brake and break-away-brake) and go. The instillation is probably easy as it is just running cable, but I elected to have a trusted technician do the instillation. You need to drill through the fire-wall, and you need to have the flexibility to work under the car.