I built a 12X16 shed last year, it was to free up room in my shop. I keep my implements, snow blade, grapple. Ladders, log splitter, chipper, powerwasher, snowblower etc. Has roll up doors on both ends
Mine is a land pride third function installed by the dealer, it is hot all the time, and you can hear the clicks, and there is little green arrows that light up when you press the buttons.
Can you open the hood and look behind, if it's wires you could trace them. When I first looked at it thought it might be on a rheostat for dash lights.