Quote:
Originally Posted by SunSoaked
I like the idea of an OEM buzzer. I didn't know they just plugged in. Where in the fuse box do they go? Looks like two rows of pins. I'm gonna go look at my 85 and see if it's obvious. I need one. Curious why it takes 7 terminals for a buzzer?
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I believe these plug into the "convenience center" as opposed to the fuse box. The convenience center is a secondary electrical panel that GM added to these trucks sometime around 1985 and if I remember correctly it's located somewhere above the gas pedal (the horn relay and hazard flasher also plug into the convenience center).
According to the wiring diagrams, the 7 pins are connected to:
- switched power (ignition)
- "fasten seatbelt" light on dash
- ground
- driver side seatbelt retractor switch
- key present in ignition switch
- constant power
- dash illumination circuit
So in addition to being a headlight warning buzzer, it looks like they also serve as a seatbelt and key-in-ignition buzzer.