"fasten seat belts" warning light & buzzer won't turn off

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"fasten seat belts" warning light & buzzer won't turn off

Post by dhw3971 on Tue Aug 07, 2018 9:07 am

So after 43 years the "fasten seat belts" buzzer and warning light has decided to stop working correctly. Yesterday I discovered the the buzzer and light just keep on goin' instead of turning off after 5 seconds. I removed the buzz box but the light is on all the time.

Anyone know what the cause of this is and how to fix it?
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Re: "fasten seat belts" warning light & buzzer won't turn off

Post by Joe73 on Tue Aug 07, 2018 9:43 am

I'd plug the buzzer back in and disconnect the switch under the seat drivers side. If that doesnt do it, reconnect it, and disconnect the passenger side. That will eliminate if its the seat switches.

If I remember correctly, the yellow wire with the black stripe is for the drivers side buzzer.
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Re: "fasten seat belts" warning light & buzzer won't turn off

Post by dhw3971 on Tue Aug 07, 2018 2:46 pm

Under the seat, you say?  Hmm...I've got a bench seat and I know that when I've removed it in years past I do not remember disconnecting an underseat switch.

I think there are two black wires leading up to the female part of the buckle; are those related to this problem?
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Re: "fasten seat belts" warning light & buzzer won't turn off

Post by Joe73 on Tue Aug 07, 2018 2:51 pm

Hopefully someone can elaborate on this. Its been alot of years since I've messed with that buzzer. I'm having a second thought that maybe that yellow wire with black stripe plugged into something at the floor re-tractor for bench seats.

Hopefully someone will post up.
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Re: "fasten seat belts" warning light & buzzer won't turn off

Post by thatfnthing on Tue Aug 07, 2018 4:20 pm

IIRC, it's a yellow wire and a black wire, and they have a connector stuffed in the seat belt retractor if you pull off the back cover. You can disconnect that and it should kill the buzzer.
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Re: "fasten seat belts" warning light & buzzer won't turn off

Post by dhw3971 on Tue Aug 07, 2018 4:50 pm

Seat belt retractor...that is down at the floor, correct?
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Re: "fasten seat belts" warning light & buzzer won't turn off

Post by thatfnthing on Tue Aug 07, 2018 5:00 pm

Yep. At least in 73 it was in the pedestal the rear seat leg mounted to. I *assume* that continued in later years.
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Re: "fasten seat belts" warning light & buzzer won't turn off

Post by dhw3971 on Wed Aug 08, 2018 11:31 am

I was able to snip the wires that lead up to the buckle and then wire the other ends together .  This ended the buzzer but the idiot light remains on.  I'm going to get some help from a friend who is a whiz with auto electronics and he may be able to make thelight go out.
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Re: "fasten seat belts" warning light & buzzer won't turn off

Post by dhw3971 on Fri Aug 24, 2018 11:56 am

I've been unable to disconnect the fasten seat belts warning light (black tape repair currently in use). I checked the schematic in the electronics section of the forum and didn't find one for a 1975 with automatic...anyone got a line on one? I'm searching the WWW with few results.
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Re: "fasten seat belts" warning light & buzzer won't turn off

Post by thatfnthing on Fri Aug 24, 2018 12:13 pm

You could just take the dash face off and remove the bulb...
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Re: "fasten seat belts" warning light & buzzer won't turn off

Post by dhw3971 on Fri Aug 24, 2018 1:26 pm

yes, I have considered that.   But due to a few reasons that really made the process difficult  Head Bang  the last time I had the those pieces removed I swore it would remain intact forever...I'll do it as a last resort.  maybe the bulb will burn out soon...
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Re: "fasten seat belts" warning light & buzzer won't turn off

Post by dhw3971 on Mon Aug 27, 2018 11:08 am

problem solved yesterday. Driving home from a trip the odometer decided to get stuck at 69999.9 so that required a removal of dash face and speedometer. Removed the fasten seat belts light bulb in the process. Now the car will be faster without that extra weight.
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