Hi,
wondering if anyone else has had a 880-3 code that was not a short in stop lamp harness or the light. we have voltage coming out of the computer pin out for the stop lamp when lift is not running/running and stop lamp harness unplugged. when power is removed from the computer for a long period of time the voltage will go down to 0v, but upon powering back up, that voltage creeps up to around 6v within a couple of minutes and at that time the code shuts unit off. voltage eventually gets as high as 9v with battery voltage measuring 12.8v.