This is the tail lamp wiring harness diagram for the 1954 Chevrolet Truck. The first picture will show the main harness, main harness extension, and the connectors below the driver’s seat. The second image show us the main harness, main harness extension, new wiring connections, directional signal harness, and the color of the cables. The third image show us the lamp assembly harness, with components like lockwasher & nut, tail lamp, stake pocket, bolts, bracket, and clip. Fourth image is the placement of the tail lamp. Click on image to view it larger in a new tab.