Tips for Replacing Fluorescent Bulbs 4 Lamp T8 Ballast Wiring Diagram
The fixture and the existing 2-lamp ballast has 4 ports: one That diagram holds true for ANY two lamp/three wire replacement ballast. They have 1 wire to each bulb end. His old ballast was a rapid or programmed start ballast which have 2 wires to bulb ends, since they preheat ...