Quote: I have two line locks one plummbed into the front and one plummbed into the rear. There is a switch on the dash for setting only the front for for burn outs and when switched it sets both line locks and a two step. My rear line lock is plummbed the same way as the front and I have never had any problems.
Is you rear unit plumbed "normal" or "backwards" as others have mentioned?
I have a Hurst unit I want to use to lock out my rear brakes. I'm plumbing it now, and figured I should hook it up as normal with the M/C going to the IN port of the line lock.
