My electric steps come out when I turn on my headlights

emsrvs wrote:
Doug.....The same problem occurs when I turn on the parking or running lights.

OK. That points to the Door Step switch wires are connected to the RUNNING light wires. If you have a running light close to the Entry door, I would check its wiring and see if the step door switch wires are connected. The door switch wires are usually less than 4 feet long. They go from the 4 prong step quick connect. BUT, only 1 wire goes from the Magnet in the door to the 4 pin. The FEED ground can come from any ground source. So, if the FEED ground is connected to a Clearance light ground, I guess that small feed back would cause the step to open and close. If I had your unit in the shop, the first thing I would do is run a new ground to the magnet and a new ground from the magnet to the step control harness. Does not take long and removes that as a variable. Doug