gunrunnerjohn posted:The lamp outputs from most TMCC stuff, including anything that uses the R2LC or R4LC are half-wave track power in command mode and full-wave track power in conventional mode. Typically, for incandescent bulbs, a 12-14V bulb is used. If you want to use an LED, a series 470 ohm resistor is a good choice.
The headlight on the steamer should be on all the time, the tender reverse light comes on in reverse. That is accomplished by using the AUX1/4 configuration code, steamer with smoke.
I think I'm going to go the LED route, and just make my own housing for it. From the pictures of units with the backup light in place, it appears identical to the front headlight, and is basically a cylinder with number boards (non-lighted) on the sides, and a clear "lens" on the front.
