You wouldn't use any of those, the N8031 MARS Light Simulator is the one you want. It needs a filtered DC power supply from 6V to 18V, preference being 12VDC or lower to avoid overheating the tiny regulator on the board. If you are driving a red LED, then you want the N8031C version for the lower voltage red LED.
Thanks for the recommendation. From your experience, and possibly with this K-Line car, are the marker lights & end light using AC? The filtered DC power supply has me a little confused, are you saying add an 18volt diode in series to convert AC into DC for the red light? I will test the two leads to the red LED to read the Voltage. Any other suggestions?