Ok, next silly question.
'68 B body - are the parking lights (front) supposed to be illuminated when the headlights are on ? New M & H harnesses all around, all the grounds are good and all other lights function normally. They come on with the switch in the mid position, but go out when you turn the headlights on.
When I bought my '68 Roadrunner new, the parking lights would go out when the head lights where on. Over the years I have rewired them so they stay on when the head lights are on, just like the '69's.