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Connecting the microphone to the touchscreen head unit


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Hello , 

Hello I just bought on eBay the 7 inch touchscreen tablet to replace the base car radio, however no beam and no microphone, so can tell me on which pins plug the microphone, there are 2, and I think it's on the 28 pin connector on the back of the tablet. thank you





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This is what I've found so far. It appears that the microphone is in the maplight. You can get the mic and the light fascia, but the cable is very short. It needs an extension that runs to the unit. I've taken pictures pointing to the unused ports on the head unit, so it's one of those two. I think it may be the 8 pin one as the other looks like it could be for the rear Speakers

The black and blue cable is the type of thing we are looking for, this one is similar but not compatible.

If I knew which pins it was I could possibly make and adaptor so any microphone would fit. But manuals for Toyota and the pioneer units are so hard to find.

The head unit I have is avh-7148zc





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