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Hi, just trying to wire up my pioneer gm-620 car amp and having some problems with which wire goes where, due to not having a wiring diagram. (red is live) (black is ground) but i dont know where the blue one connects to. (have wired up speakers already) help please.

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I need to know is the blue wire comming from the amplfier or comming from the radio?

if its comming from the amplfier then
you need to connect this to the igintion wire (yellow) or if the radio has it connect it to the radio (it shoudl become 12V when radio turns on)

if its comming from the radio then
you need to connect it to the remote jack in the amplfier
the wire become 12V when the radio turns on
and the amplfier only turn on when the remote connection on the amplifier becomes 12V

Posted on May 14, 2010

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