While at York this past fall, I picked up a GP-9 upgrade kit which contains an LCRX board. My plan was to install it in a MU car to make it command control with electro-couplers. The install went well. Couplers work. If I use conventional bulbs the headlights work fine. I had wanted to replace the bulbs with LEDs. I installed a 1 amp diode and 460 ohm 1/4 watt resistor in line with the LED. The board only provides a single pin to power the front head light and a single pin to power the rear headlight. Return is to frame ground. I installed the LED and diode with the cathode on the ground side, anode to the power side.
At first, the LED would not light at all. So installed a .01 uf cap across power pin from the board (for the light) to frame ground. Figuring I needed a small drain to trigger the triac. This sorta worked. The LED will now light, but it acts weird. If I fire the couplers, the LED may go out. Changing direction, the front LED goes out and rear LED will not light. Change direction again, and sometimes both LEDs come on.
I could put the standard bulbs back in and call it a done project but wanted to know if there was something else I could try to get the LEDs to work correctly with this board.
