I recently got my 64 Hardtop and am slowly getting it back to shape (replacement carb spacer, new steering column rag joint & bush, washers and air vents working, etc). Thanks to Thunderbird Connection here in Phoenix and to Thunderbird Headquarters. And I got the Door Ajar warning working - well, one side - by fitting a new bulb. Now the driver's door turns the warning light on but the passenger door doesn't. It's not the courtesy light switch that activates it - it comes on before the lights do - so what in the door(?) activates Door Ajar?