My electric steps come out when I turn on my headlights

Steps use a Open/Closed ground signal from the door switch to open and close the steps. The steps themselves have their own ground wire. I doubt the STEP GROUND is the problem. I would suspect that somehow the Door Pin switch wire is somehow connected to the Headlight harness. Since the steps seem to always extend and retract(the op can confirm), with the headlight switch with no failure to do so, he needs to verify the 2 Ground wires coming from the door switch are not interconnected somehow to the headlight OR the Running light circuit. Has the OP verified that it is malfunctioning when just turning the running lights ON without going to the headlight position? I suspect the Running lights will cause the problem also. Doug