how to rig a headlight buzzer and dash light upgrade
Fleet Mechanic
Joined: Mar 2013
Posts: 1,661
Likes: 1,061
From: Montana
I can't speak to the seat belt buzzer, both the light and buzzer work on mine.
As far as how you described how you wired the piezo, i don't think will work. You have 12v+ coming from the headlight switch and 12v+ coming from the ignition switch when key is on. You're not completing the circuit doing that, you're back feeding 12v from ignition switch to headlight switch and vice versa. You're using the piezo to tie both circuits together. Using those same wires in conjunction with the normally closed relay shown above should work though and avoid any sort of back feed from one circuit to another.
As far as how you described how you wired the piezo, i don't think will work. You have 12v+ coming from the headlight switch and 12v+ coming from the ignition switch when key is on. You're not completing the circuit doing that, you're back feeding 12v from ignition switch to headlight switch and vice versa. You're using the piezo to tie both circuits together. Using those same wires in conjunction with the normally closed relay shown above should work though and avoid any sort of back feed from one circuit to another.
Fleet Mechanic
Joined: Mar 2013
Posts: 1,661
Likes: 1,061
From: Montana
Looks to me the seat belt buzzer is a buzzer and relay all in one. Without looking at a schematic two of the terminals on that buzzer go to seat belt and when you insert the buckle it completes the circuit and shuts off the buzzer, it's probably a normally closed relay as described above. If seat belt is unbuckled the relay is closed and completes the circuit for the buzzer so it makes noise. Insert buckle, that closes the buckle circuit energizing the relay, opening (shutting off) the buzzer circuit. There's probably a capacitor of some sort buried in there too which acts like a timer to shut off the buzzer after a certain time period. I'd have to look at a schematic to confirm though.
FTE Chapter Leader
Joined: Sep 2024
Posts: 296
Likes: 83
From: Charleston, SC
Looks to me the seat belt buzzer is a buzzer and relay all in one. Without looking at a schematic two of the terminals on that buzzer go to seat belt and when you insert the buckle it completes the circuit and shuts off the buzzer, it's probably a normally closed relay as described above. If seat belt is unbuckled the relay is closed and completes the circuit for the buzzer so it makes noise. Insert buckle, that closes the buckle circuit energizing the relay, opening (shutting off) the buzzer circuit. There's probably a capacitor of some sort buried in there too which acts like a timer to shut off the buzzer after a certain time period. I'd have to look at a schematic to confirm though.
I guess I can poke around with a test light at the harness where it plugs in and see what I can find out. From that I may be able to figure out how to bench test the buzzer.
I probably will not be able to mess with it for a couple of days due to work (damn bills).
Hopefully someone who already knows and will provide the details in the meantime.
FTE Chapter Leader
Joined: Sep 2024
Posts: 296
Likes: 83
From: Charleston, SC
I was looking for a pin diagram or schematic for the seatbelt buzzer and found a guy who made his own lights left on buzzer setup and thought it was pretty cool.
https://www.instructables.com/Buzzin...ight-Reminder/
https://www.instructables.com/Buzzin...ight-Reminder/
Fleet Mechanic
Joined: Mar 2013
Posts: 1,661
Likes: 1,061
From: Montana
I am pretty sure those buzzers are just a reminder that cut off within a certain amount of time after startup but I may be . There do not appear to be any electrical wires attached to any portion of the belts but agree now that you mentioned it that the relay and buzzer are both inside.
I guess I can poke around with a test light at the harness where it plugs in and see what I can find out. From that I may be able to figure out how to bench test the buzzer.
I probably will not be able to mess with it for a couple of days due to work (damn bills).
Hopefully someone who already knows and will provide the details in the meantime.
I guess I can poke around with a test light at the harness where it plugs in and see what I can find out. From that I may be able to figure out how to bench test the buzzer.
I probably will not be able to mess with it for a couple of days due to work (damn bills).
Hopefully someone who already knows and will provide the details in the meantime.
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