Mach 1 Club

I just would like to confirm that the courtesy wire for the pass side sail panel runs up the pass side under the sill plate and to the wiring under the dash and plugs in around where the door courtesy light does.
I have located the wire coming from the sail panel light but it was heading toward the drivers side sail panel courtesy light but the connectors do not mate and while researching wiring harnesses i see many vendors offering what they call a courtesy light extension to go from the drivers side sail panel to the pass side.I was told the pass side has it's own feed from under the dash as described above.what is the correct way.
sorry for all the electrical questions but tell me once and i'll make notes.

I have decided to join this site hoping to get some help with many aspects of my project.

MY 69 PLUGS IN TO THE DRIVERS SIDE AND RUNS UNDER THE SILL ON THAT SIDE AND THEN SPLITS GOING UP TO THE DRIVERS SIDE AND RUNS UNDER THE BACK SEAT TO THE PASSENGER SIDE. GOOD LUCK TO YOU

I found a wiring diagram in the electrical section and according to that the 70 mack one comes off the harness on the right side and back to the door switch, door courtesy light and then to sail panel.It does not daisy chain off the drives side. and there is no wire for that over there , only one for the dome light option.
thanks.
Terry