Ken is the wiring color coded ?

On my '40 , the wiring at the fender connection is : all reds together , all greens together and all greys together (for headlamps )plus an earth ,screwed onto the inner fender.

The park lamp wires should be in an extention loom to clamp up under the fenders (you still have the clamp , right ?)

Take special care to have very good earth points . Or run a seperate wire just for the earth .