I got the harness for my radio, so I can splice everything then just plug the adapter into the DINN plug on the back, and all of the wires are labeled on the harness, but none are on the wires on the car. I do have the 2 subs in the doors as well as the amp in the back. any help with this would be appreciated.

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1996 E300 D
1992 300D
1990 Ford E-350 7.3 Diesel AKA "the Deep Fryer"

Hope this helps

http://home.budget.net/~sura/wiring/89%20300E.pdf

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1996 E320 since 1/16/08, 171K miles as of Feb 2011

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1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE