I have allways thought this is the key in buzzer for 70 ( A and E bodies ? ), but suddenly check this and find is the... Fog lamps relay ?

http://www.2040-parts.com/1970-mopar-cud...umper-i2220234/

Which is the truth ?


MyMopar tools website doesn't have listed, nor bradsnosparts on his inventory

Could be a multi use item. Relays are interchangeable. The ad has this explanation listed.
Note; This Chrysler Relay has been made under about 10 Different Part Numbers and they get traded around for different uses. We have never had one that matches the Part Numbers (3004186) in the Master Part Books, even from Completely Original Cars.

if we were talking about a relay vs relay, good, but not a buzzer against a relay

In the link their interpretation of relays is somewhat off.
The relay they show 2983696 and claim is correct road lamp relay, is in fact the key/head lamp warning buzzer for 1970 with A01 pkge.
It is not the 1970 road lamp relay as they claim and not assembly line installed for such.
2983696 is not seen in the parts book, but is the number cast on the key/head lamp warning buzzer ( part number 3420884 )as shown the parts book and what is shown in first pictures.
When you open the box that is what is packed inside.

Road lamp relay is in parts book listed as 3004186 but 2889916 is cast on the correct 1970 road lamp relay itself and again 2889916 is not shown in parts book.
The two units in question, shown side by side, bracket mounting configuration different, key/hd lamp buzzer on left, road lamp relay on right.
Part numbers are many times not the same as a cast number.

yeap I'm aware about part number can be diff between stamped number and service number on package. However is not allways like that, i.e. wiper switches stamped numbers meets the PN catalog as far I recall

Thanks for the info BTW

Numbers on parts not being the part number. I have never understood why that is. And of course there are the exceptions.
I wonder if this was also true with Ford and GM parts of the day?

I can't understand that either. I can understand when a package comes with several parts not being sold individually, where each one still gets its own PN, but service PN unmatching the stamped/casted number being just one piece on package... ???

Neither of those look like a buzzer to me, but I do see it listed as that on google search as E body part. But if you google 2983872 you will find this buzzer on every thing including, A, B, C and E body.

Thanks Mccannix for the pictures. Always knew there was some kind of difference between all the relays. All my 1971 Cars have the Key Buzzer Horn relay without the arm, all four cars. I also bought a stash of relays that have the arm and wondered why but never looked into this. I believe in the past I tried the arm relay in the buzzer location switching one for the other and both made everything work. This is on 1971 E Bodies, not sure if 1970s are different.

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.

2983872....'key in buzzer'... used without A01 light group, 1970.

What would the difference be A01 or not?

Great information on the 1970 relays Terry. On one of my cars I have had a problem with the key in relay. I installed an nos 2983696 and the car does not have the A01 pkg so it didn't work. I was thinking that I needed a diode to make the buzzer work. I will replace it with the 2983872 relay today. Thanks

I am looking for one of these if anyone has one to sell.

THanks,

Jeff

so the mistery about dif PN for this pieces keep going

A friend of mine have a 2983693 on his 70 Swinger.



for what car/body ?

The light on buzzer option depends just on get the diode or not plugged to make it buzz or not with lights. But these buzzers works for Key in and Lights on the same, so, since the key in buzzer become standard equipment, all cars should have it

I'm going a bit from memory and experimentation years ago when I encountered a problem , but because A01 cars have more complex wiring and routing there are the two different systems.
A01 includes map light, trunk light, glove box, ashtray light, ignition light and more.
Can also be combined and we're talking 1970 only here, with optional headlight time delay.
There was a thread years ago on here about 15 pages, that addressed a lot of this and more.

if you detail this diagram will find the only diff between lights on buzzer and not is the diode to link the parking light signal to the buzzer. I edited te diagram because I was showing diff stuff at FBBO.

The reason for the diode is just to not turn on the parking lights when you insert the key. This is because both signals drives positive. On 71 was changed, using negative for key sensor instead

And adding a plus, on 70 this system was deactivated when you put the key in RUN, so only buzzs when car is off. Since 71 the buzzers remain buzzing ( if needed ) no matter the ign switch status.

I think Nacho is right, for example I do not think Road Runner came with Light on option, even though it can have A01. Yet a Belvedere could.

The Buzzer you showed actually looks more robust, then the one I showed.

I will say, there is one more oddity in the Plymouth service manual. One of the relays, maybe E shows resistors inside the relay on the drawing. I know the 872 does not have any. SO maybe that resistor is in the other relay, and does help prevent any feedback if you have the Light on option, or Light Delay option, that some models had with the A01 package.

I was under the impression the OP was talking 1970 E-body since he was initially referring to the so 2983696 (pn 3420884 ) being a roadlamp relay.
I cant comment on the B body models but I believe the 2983696 was used in A body as well .

If I can find that old thread, it goes into deep detail on all relays, buzzers, harness, 70 and 71 all being different.