Thanks, I will look for a PL-303 plow. I think some SLR loco use Natan K5 but this one seem to be different.
Yes the ditch light will be lit with bulbs. I will run the wires trough a hole in the pilot. I glue the bulb with Pacer canopy glue so they can be removed easily.
There is no easy way to make working ditch lights on such a thin platform without seeing wires hanging in the front of the pilot. The rear ditch lights are mounted on the pilot face so wire won't be apparent.
Maybe micro LED's would be a better option.
I have done numerous DL installs using 0603 Surface Mount Warm White LEDs and used magnet wire. You can barely see the wires.