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Old 05-25-2019, 05:58 PM   #3
ReGULT51
 
Join Date: Jun 2010
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Default Re: TCM Radio/Data-line Connector wire in stereo harness

I just installed a 3400nex. If I recall, there were two wires I didn’t use. One was the speed sensor wire. I think there was also a blue wire that I believe was used for the optional cellular antenna/audio. I left both unconnected. The service manual has a wiring schematic for the audio. Section 8w-47 is what I used for reference.
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2004 2500/118"
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