I know you had to, I left it wide open. Trouble is the buzzer is also the horn relay and not sure if Chrysler had a new version that gave you a chime and horn relay hook up.turn the radio up...? sorry, HAD to... I am sure there is a way - it's a simple little 12v doohicky.. look up chime module
Yes, it looks like the part, but I don't believe it has a chime.
Thanks for the intel and your investigation. You're right about people looking to disable the chime. I like to have some sort of warning before locking the keys inside, besides that load annoying buzzer. Some Chrysler engineer came up with that one just to drive people crazy.Did a little bit of research last night but wasn't able to come up with anything very promising.
Couldn't tell you when they started to use a chime. And I wonder if at first it didn't use the radio speakers to do so. I did find a box that at least looked small enough to work, from a Ford Thunderbird and others, but didn't look into how it worked (speculating it used the speakers). Found some info on a Chevy truck site about disabling it, and they talked about it being in the middle of a circuit board. Doesn't sound like that setup used the radio speakers to make the chime sound, but it didn't sound like a good retrofit, either.
Funny thing is, most of what I found were people asking how to disable the chime. And here we are talking about how to retrofit it.
Thanks for all the information, looks like a good place to start. I did fine this one which is for a Viper. The pins look similar to the one used back then, but haven't found the schematic yet to verify.This appears to give some more input on the module I linked above. Door Buzzer too quiet? - Ford Bronco Forum
Based on a quick read of the above, it looks like it might have some potential.
Provided that it is actually a chime and not a buzzer. Funny how many hits I got when I googled "chime" that actually related to "buzzer".
...leaving the horn hooked up...
It's my understanding that the horn relay also contains the buzzer for the key in ignition.
It's my understanding that the horn relay also contains the buzzer for the key in ignition.
Ok, on my 73 Horn/Buzzer relay the H2 dark green goes to the horn, B Hl goes to the fuse, M16 Blk goes to key switch, and H3 Blk goes to horn switch. Three are for the horn and one for the key buzzer. Seat belt circuit buzzer is on a different circuit.I don’t have it locked down, but it does look easy to add the Ram chime.
Based on my ’74 Duster wire diagram, the buzzer receives power and is grounded via the seatbelt interlock and/or door switch when the key is in the ignition.
This means that in order to wiring in a chime from a Ram and make it function, it appears that the following would need to happen:
1. Current power (red wire) to the buzzer will need to be moved to the chime (spade #7).
2. The ground (black wire) that runs through the key-in switch and door switch needs to be moved to the chime (spade #6).
3. A ground wire from spade #3 needs to be added.
The above would recreate the current functionality with a chime rather than a buzzer.
If additional functionality was desired, the below could be added:
1. Chime when headlights are on, and door is open:
a. Add a second ground to spade #6 (key-in switch above) that grounds when the headlights are on and door is open.
2. Turn the chime off when the car is running and door is opened:
a. Add a hot wire from the blue ignition wire to spade #1.
The above ignores the brown wire running to the seatbelt interlock since ’74 is the only year it would exist, but in my case, it might make a convenient place to add the headlight ground.
Not really sure how the headlight ground would be wired in. It appears the Ram headlight switch includes a ground switch, but the wiring diagram I have for my Duster doesn’t show the headlight switch including anything like that. Maybe a NO relay off the gauge lights that closes when the door is opened, completing the ground for the chime?