This is a lighting adapter for military vehicles, 24vdc to 12vdc.I made this quick video to hopefully clarify the operation of the adapter. It was designed to run primarily for a military semi truck to pull a civilian semi trailer. It only drops the voltage when there is a load applied. After some testing, it was determined that you need at least 4 marker/tail lamps to lower the voltage correctly for the marker/tail lamp circuit. Only one large 12vdc bulb is required to lower the brake/stop/turn to the proper level.
Duration : 0:3:53
[youtube OlI3T4EM_RA]