I was hoping that the '58 1/ ton I bought just needed the wires hooked up in back but that didn't do it. Looking for clues. My headlights,front park lights and front turn signals work fine until I hook up the tail lights. I should also note the turnsignal stop working on the left when the headlight is on, just glows. I get no rear brake lights ever and only a faint glow from the rear signals with the headlights on. I get current at the rear wire when the brakes are on and I know the brake switch is o.k. Is my rear wiring shorted or could it be the light switch? The filaments in the rear bulbs look o.k.