On my project none of those lights were working either, so I spent almost $40 on bulbs and cleaned every contact point I could get too and used that blinker grease to lube every bulb and connection and so far so good even the funny little front fender blinkers are working, vasaline works well also for bulbs to prevent humidity on the contacts.
Before I disassemble the car all the exterior lights worked so I think there is a loose wire somewhere or a bad connection.Possibly a bad ground somewhere as the blinker flasher is not working either.
