I finally got back to this. My seatbelt light worked when I got the car, then didn't work at all for months, and is now intermittently lighting up again. The seatbelt buzzer doesn't work. The lights on and key in chime both work properly. I bought a new (NOS) chime box & installed it. There was no change with the seatbelt light or buzzer, but neither the light or key chimes worked, so I think maybe it wasn't new. So, I took it out & put the original back in (and fixed the speaker so it's factory loud now).
Now I think the chime box isn't the issue. The service manual shows a separate "Ignition key warning buzzer", and I found something online that looks like it. The service manual also shows a "Seatbelt timer buzzer", circled green below. Maybe that's the issue? But there's no part number in the service manual, and I can't find anything online. And I can't see anything in the car... this crap's all tucked up in the corner.
Any chance that anybody knows anything about this seatbelt timer buzzer thing?
Now I think the chime box isn't the issue. The service manual shows a separate "Ignition key warning buzzer", and I found something online that looks like it. The service manual also shows a "Seatbelt timer buzzer", circled green below. Maybe that's the issue? But there's no part number in the service manual, and I can't find anything online. And I can't see anything in the car... this crap's all tucked up in the corner.
Any chance that anybody knows anything about this seatbelt timer buzzer thing?