Nice work Nick, did you use bulbs or LED’s? I just found that NJI uses 12-14v bulbs in their dwarf signals and not LEDs you don’t need a resistor but I don’t expect them to last nearly as long
LEDs. I prefer LEDs for all my signaling. These ones are 1.8mm, which are a tad smaller then opening in the signal head. I dip them in epoxy, which nicely fills out the hole, and gives a nice bulb and reflector look.