Parts Wanted: ISO Warning Buzzer & 3-Wire Door Switch - 1973 240z

[Matthew Abate]

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ISO Warning Buzzer & 3-Wire Door Switch - 1973 240z

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I am looking for a working buzzer for a 1973 240z and the 3-wire door ajar switch that makes it work with the steering lock switch. This buzzer sounds when the key is on while the door is open. The 3-wire switch completes the circuit for the buzzer if both conditions are met.

See photos for examples.

Preferably NOS, but nice working condition will work. Please keep your fees reasonable. I have a source for these already but am looking for them in nicer condition.

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• Advertiser
  Matthew Abate
• Date
  03/11/2024
• Price
• Category
  Parts Wanted
• Year
  1973
• Model
  240z

 

[zKars]

Am I close?

The switch is not new, but in good shape.  Might have a better one.

[SteveJ]

The 73 buzzer is a different animal. I haven't studied the other wiring diagrams enough to know if it was used earlier. According to the factory wiring diagram, the buzzer @Matthew Abate is looking for has 3 wires. Two are positive feeds, diode isolated, and one ground wire. One of the positive wires goes through a set of normally closed contacts at the driver's side door switch. Those contacts are connected to two of the 3 wires on that switch. Only one of the wires on the driver's door switch grounds on the switch.

[zKars]

Dang things are attached to the pedal boxes, not something I saved many of. I know a guy with a 73, maybe it’s still on there.

[zKars]

Well looky here.

yes, it works. The most miserable little annoying buzz ever

Been outside attached to this pedal box for ages.  

Edited March 13 by zKars

[SteveJ]

That is DEFINITELY the one. It has the diodes and everything.

[zKars]

Oh for heavens sake. 

Now that I know what I’ looking for, all of these are labelled as “Horn”and have the same connector.

Also found another style of early buzzer

Do NOT ask me why I didn’t just look at Matthew’s picture in the original post for this ad to see what I was looking for…   Old people, jeez….

 

Edited March 13 by zKars