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15-pin to 20-pin
Has anyone ever tried creating a Toyota 15-pin to 20-pin adaptor? I've found myself in possession of a 20-pin premium head unit, and an earlier 15-pin amp, and have been wondering if I can get them to work together.
As far as I can tell, the 5 extra pins look to only be there for more advanced head units (navigation systems, mainly). It looks as though the basic single CD/cassette HU only uses the same 15 pins that were used in the older HUs, but I could be completely wrong.
Any thoughts, advice, or discouragements?
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