So your headlights and all interior lights work, just not your park lights unless you turn them on with the switch on top of the steering column?

The stalk and that switch get power from different places (thats why one turns on the lights when the car is off and the other one doesn't) so I would check all of your fuses to make sure another one hasn't blown as well.

I think you need to check fuse No 7 (20A) in the Main box and fuse number 14 (15A) in the sub box.

If they are good I can send you this wiring diagram I have and you can work from there. Best of luck.

__________________
John Stamos fan club lifetime member