Or... Notice the ALT' gauge has ring terminals with toothed washers and nuts. Every gauge post could be connected in that same manner. Leaves only the light sockets to rely on the pcb traces. If you can change those to a 2 wire bulb socket, they can be wired directly also. With that change the "which way does the LED go?" puzzle is solved too. Sounds krazy? E-body among others are factory built this way, no printed circuit boards. Their wire terminals are the little push on 90 degree booted terminals,,, but those aren't cheap. Ring terminals work.
The wire colors / where they go is marked on the back of the housing.
