Door jamb switch

You must have a really late model or a high-option car, since multi-wire switches and timers. The one mentioned above sounds like the simple 1-wire switch that just grounds the wire when the door is open. Even my 1996 and 2002 Mopars are like that, albeit I recall the switches have 2 wires so they have a dedicated ground. If really stuck for parts, seems you could re-wire it as a simple on-off type.