I know I own a 3/4 ton, and this forum is for big bolts. I do, however, consider my tow truck a cross-over vehicle(at least where my question is concerned) That being said: I would really like to have some input on brake locks. I just can't find much in the other sections. I have a MICO brake lock. I would like to either have it repaired or replaced. Mine is a vacuum powered, 6v controlled(switched)one. I am considering getting a new one, but they're a little pricey for me right now. The newer ones I have seen are all 12v. I am considering getting a cable, lever, or twist version. Any input/experience(s) will be greatly appreciated.