Question about 1998 Chevrolet Blazer

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Head unit wiring diagram

I cant figure out wich wire is groun, positive or memory please help

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Radio batt positive[F1](hot at all times) is the orange wire, Radio Ignition positive[F2](hot with key on) is the Dark Green wire, Ground is black wire[E16]. A test light would make it easy to verify each wire. If you need any more assistance let me know.

Posted on Dec 23, 2008

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http://i267.photobucket.com/albums/ii320/RonJ_HCF/picture_2980.jpg

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