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I went to install an amp and Subwoofer setup this weekend and couldn't find any help that made sense to me as far as radio wiring. Found this a little useful taken from the DEI Techs website.
Searched all Dodge vehicles till the colors started matching whar I saw in my SXT with single disc CD. Turned out to be the same as a 2006 Dodge Ram Pickup:
Radio 12v
gray/red
Radio Ground black and black/lt.
LF Speaker +/- dk. grn/yel - dk. grn/lt. blue
RF Speaker +/- gray/yellow - gray/lt. blue
LR Speaker +/- gray/lt. grn - gray/dk. grn
RR Speaker +/- dk. grn/lt. grn - dk. grn/gray
Only wires not showing are the leads for the dash tweeters.
for the remote turn on lead I went straight to the steering column acc wiring. There is an acc wire out on the back of the radio but it's for power antenna (once you go AUX or CD the amp would turn off lol)
Anyway the install was a success, had to use a high/low line out converter behind the radio so I could use Fosgate signal cables. Spliced the converter into the rear door speakers for signal.
Cheers!