Got the following lights working
1. Parking front & rear
2. Tail, rear only
4. Directional lights, front & rear, right & left
5. Headlights, Hi & Low beam
Still no dash lights and only the amp meter and oil pressure work. Engine temperature is mechanical with a bulb in the engine and a copper tube to the gauge that some one cut and all the ether leaked out... Speedomter works though.
Took a night ride. Weird not having backup lights. 1948 = primitive. The truck didn't come with directional lights, backup lights, or front directional lights.
Here is the radimeter (temperature) gauge bulb removed from the engine: