71 and laters are a diff monsters on what buzzer reffers

Key in Buzzer is part of the horn relay and sensor drives ground ( diff than 70 what handles positive ). On these the thre grouped prongs is the horn section, and the separated prong is for the key in sensor to make it buzz

bracket shape or "unbracketet" varies depening on car. B and E bodies mount on fuse box so unbracketet like this:





Now this would be for A bodies, which mounts on Kick panel area, close to dash frame:

but HEY, don't think EVERY relay with this prongs disposition is necesarilly a horn relay/key in buzzer!!! it could be several devices with same prongs disposition on diff years!!


Seatbelt buzzer is unexistant on 71 but 72s is a plastic piece with two prongs



Lights on buzzer is similar to the one being posted but Two prongs. Once again, bracket changes according to the body.



on 74 this buzzer setup changed once again due the added interlocking system using just one buzzer device for everything, controlled by the interlock control box.