47-59 Parking brake question

[TX3100Guy]

Underside of truck work done for the E-Stopp unit, now I start on the ECU wiring inside the truck. Al parts cut, drilled, welded as necessary and then powder coated today. I used the original spring as a return spring for the tab on the brake bar. Works perfectly and the E-Stop stall out when the brakes are fully applied. I know this because I jacked up the rear end and found out when the rear wheels would not turn. I did have to adjust both brake cables and the clevis on the E-Stopp and the two brakes cables to find the sweet spot.