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Glove box relays 1970 or 73 barracuda

unclejesse

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Hello, what are these 2 relays beside the glovebox? Key buzzer? Seatbelt warning? I find multiple answers. My car VIN is 1970 but some of parts are 1973. I think some owner before me had a 1973 parts car. 17870829350973977346327583469955.jpg17870829818165642140251530572277.jpg
 
Hello, what are these 2 relays beside the glovebox? Key buzzer? Seatbelt warning? I find multiple answers. My car VIN is 1970 but some of parts are 1973. I think some owner before me had a 1973 parts car. View attachment 158381View attachment 158382

The two pictured devices are as follows:
  • Metal case with three terminals: Seat belt warning relay, part number 3620858 (superseded 3588587). Used 1972 - 1974.
  • Plastic case with two terminals: Seat belt buzzer, part number 3620874. Used 1972 - 1973.

 
Have you downloaded your free PDF factory service manual(s) yet? The wiring diagrams in there are really good and quite informative.

From memory, most of what is over at the glove box is A/C related stuff.
 
Have you downloaded your free PDF factory service manual(s) yet? The wiring diagrams in there are really good and quite informative.

From memory, most of what is over at the glove box is A/C related stuff.
I found something from 1971 on YouTube that I reference all the time. The challenge is a 1970 car with some 1973 parts.
 
The two pictured devices are as follows:
  • Metal case with three terminals: Seat belt warning relay, part number 3620858 (superseded 3588587). Used 1972 - 1974.
  • Plastic case with two terminals: Seat belt buzzer, part number 3620874. Used 1972 - 1973.

None of them is the key buzzer? I have no seatbelts. Though I'm sure they were removed long ago.
 
None of them is the key buzzer? I have no seatbelts. Though I'm sure they were removed long ago.

From what is seen in the provided pictures, the components are as described in post #2.

1971 - 1974 E-bodies have the key-in buzzer combined with the horn relay and mounted to the fuse block.

1970 E-bodies have a separate key-in buzzer, part number 3420884, which does mount in the same area near the glove box, but mounts at a different angle, and looks different. The following image shows the 1970 key-in buzzer:
Screenshot 2026-08-18 6.51.01 PM.png




 
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