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Car Microphone Question

john.r2

Mar 27, 2023
18
Joined
Mar 27, 2023
Messages
18
My car has a factory fitted microphone. I want to try and use this microphone for my aftermarket head unit. Normally a microphone has only two wires but this one has 3. Red, White and Black. Does anyone know what the 3rd wire may be? Can i ignore the 3rd wire and leave it plugged in as it is and locate the 2 actual mic wires and connect it to a 3.5mm jack. Question is what two wires will be the actual microphone?
 

dragon

Oct 31, 2022
248
Joined
Oct 31, 2022
Messages
248
if you put it into the base of a transistor to a speaker youll hear feedback if the wire is the right one.
 

john.r2

Mar 27, 2023
18
Joined
Mar 27, 2023
Messages
18
if you put it into the base of a transistor to a speaker youll hear feedback if the wire is the right one.

Any idea what the extra wire is? I’m thinking it’s chassis ground for some reason?
 

bertus

Moderator
Nov 8, 2019
3,269
Joined
Nov 8, 2019
Messages
3,269
Hello,

Dont count on dragons answer.

The following pages will give you more info on 2 and 3 wire microphones:

Bertus
 
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