What are the proper function modes for 68-70 B body map light? Does it only function when map light switch is manually turned on/off? Or, is it also supposed to "turn on" with dome lamp operation and opening of doors? Thanks in advance. Joe


70 Road Runner 383-4 4 speed FJ5 & black guts
70 Charger R/T 440-4 4 speed FJ5 & white guts