Question How Can I Upgrade My Stock Scion 4 Wire Mic + Preamp circuit?

phaze3131

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Jul 29, 2009
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Hello, I have a stock 4 wire mic and preamp board that my 2013 scion uses. The sound is pretty crappy and I want to upgrade to an aftermarket one but I am having trouble.

I'm trying to figure out which wires are what on the mic, there are 4 going into the mini circuit board and 2 from the circuit board to the actual mic.

I have continuity from one pin of circuit board to one pin of the mic, maybe this is the ground?

Do you think I could use a normal mic if I found the correct 2 wires and just left the preamp out? Or maybe I need some type of preamp device like this:


Images:
View: https://imgur.com/a/h6eYMHk




thanks so much for any help!
 

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