Non-traditional wiring of Turn Signals on 1939 Ford Covertible

[Ramblin Reck]

I plan to install Fog Lights on the Front Bumper and Parking/Turn Signal lights (1.25" x 2.25") (Non-Original) on the Rear Bumper and use them as Turn Signals Only. Additionally I plan to install a separate fuse box mounted on the inside firewall and wired to the 12V Battery. In other words this turn signal system will be completely separate from the car's stop light wiring system and the headlamp parking light system.


What concerns me is that I have a 12V Positive Ground and its effect on my wiring scheme, since All Four Turn Signal Lights will be grounded on the front and rear bumpers.



I suppose I could run one wire from each light to the negative side of the fuse block assuming that I connect the fuse block to the battery in the traditional pos to pos and neg to neg way. Now, how I would wire up the switch on the steering column and the 12V flasher? I might be overthinking this problem! Looking for advice!
Also not concerned with the four way flasher............THANKS!