External Microphone Not Working

[cpufix]

I purchased 1 x 11-RQ1221E-US-A on Order # 100005926 and 1 x OBD2 Bluetooth unit GS-Y0004 on Order # 100005973.

Callers advise they can not hear me and that the connection is noisy.
I placed a piece of electrical tape over the internal micro and this made it worst.
It would appear that the external microphone, cable or connection are not working.

Please advise solution

[cpufix]

Have tried voice record or microphone test by tapping on each microphone, both microphones are working.
I have extended the microphone lead to get the microphone near the rear vision mirror, reading forum notes this may be part of the problem.
If this is considered to be the problem please advise correct wiring details to extend the lenght.

[cpufix]

Retested both microphones by speaking, the internal microphone is the only one working.

[roscored]

there are lots of threads on this, google it and you should find your answers

[cpufix]

Yes roscored most successful solution seems to be to disconnect the internal microphone.
Which is fine if the external is actually working.

Looking at a different make of external microphone that is designed for car use and does have a 4 meter cable.

Up date later

[roscored]

I found the external didnt work until the internal was cut!

[cpufix]

On my unit 11-RQ1221E-US-A
I have replaced the external microphone with the following
PIONEER CPM1083 External Microphone with 3.5MM MONO PLUG TO 2.5MM Adapter

This works great for me, has resolved the poor quality on the receivers end.
The Microphone comes with a 4 metre lead.