Topic: "BELTS" reminder light

[kammertime]

I have the BELTS and PARK reminder lights on my 69 Boss. Both of them worked when I installed them but recently the BELTS light quit working. I have replaced the bulb and the relay with a known working one but neither fixed it. I am getting power to the relay from the auxiliary power connector which also powers the PARK light. There is 1 green wire and 1 purple wire coming from the relay to the light. The light is supposed to come on for a few seconds when the key is turned to the on position. I'm not sure when it quit working but I changed the key tumbler in the ignition switch and the wiring harness from the firewall to the engine. Would either one of these be the problem?
Thanks,
John Kammer 

[midlife]

Headlight harness MAY be at fault if you changed from a standard to tach configuration; otherwise, if you didn't change headlight harness configuration, it is unlikely to be the cause.