line lock

After years of racing on and off the track most are all good as long as you flair the tubing properly and use good quality brass fittings and steel tube nuts. No compression fittings and basically “low pressure” means a leak or low voltage. The electrical coils used to open the valve or hold the valve get hot when energized and draw more power. If the power is not there then the magnet drops holding and the valve seeps fluid by or shuts down all together. They are used for heating up the rear tires (30-45 sec) not as a parking brake.

Good luck as I am putting one on my 66’ as I type this. I went Hurst.
Joe