I will just add that my own 70 road lamp equipped cuda, that I got in around 1978 had a clear "click" sound under dash when road lamp switch was turned on. I clearly recall the parking lights coming on while headlamp switch remained in off position. Some fellow mopar heads have disputed this over the years, and I tell them they're whacked. What I can't recall, is if the operation of the road lamps, relay and all required key to be on. I'm thinking yes.