My limited search skills turned up nothing on this question, sorry if I missed it. I have a 54 3100 that has no turn signal. I have an original turn signal from another 54 that I would like to install rather than putting in an aftermarket. Is it possible to install the switch with the existing wiring or do I have will have to substitute a 2 filament socket for the brake lights in the rear and the running lights in the front and run new wires to them? Thanks for any suggestions on how best to proceed.