23369 Views 3 Replies Latest reply: Oct 1, 2007 12:15 PM by Bruce.Ferjulian
From my own observations, starting from the tip:
Tip - Right
R1 - Left
R2 - Common
Sleeve (outer) - Microphone
The switch appears to short Mic to Common. Inserting a 3-pin plug into the iPhone's 4-pin receptacle would also short Mic to Common. That wouldn't hurt anything and would allow the L/R earphones to work correctly. It also Stops/Starts the iPod, just as the switch would.
You will not get access to the Microphone without a 4-pin plug.
I found 4-pin connectors at Arcade-Electronics.Com. The plugs still have to be trimmed to fit the iPhone receptacle. The right-angle plug cannot be trimmed sufficiently.
Hope this helps.