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Could radio wiring be causing my truck instrument panel to fail?

Hi, I've recently encounted some issues with my 05 dodge ram truck. I'm not sure if this is radio related or not, but I've found evidence online that it could be. The problem was while driving, I suddenly lost my instrument panel guages. They stopped working, all lighting came on and a 'No Bus' error was dislayed, although the truck still ran fine. Long story short, ive done some research, and the error means the instrument cluster is not receiving messages from all PCM modules or something like that. I've read that the problem could be b/c there is a white/violet striped wire connecting all vehicle modules including cluster, radio, amp, ABS controller, A/C controller, and more. I recently swapped out my stock headunit for an aftermarket panasonic and wired it up myself using a wiring diagram I found online. One of the wires is a white/violet wire. The diagram did not list its use, and without it everything seemed to work fine so I left it disconnected. Everything worked fine for a few months until this happened yesterday. Does this wire need to be connected to the headunit via ACC, or ground or something?? Or can I just leave it as it is (plastic cap over cut end). Ive not found any info anywhere that mentions what should be done with this wire when installing an aftermarket unit. Any help is apprecated. Thanks -Keith

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That wire is probably data. What you may have to do is get a radio-relocation harness, contact your local car audio shop. The company is Metra out of Florida. You will need to get this harness, possible p/n 70-6512. That way your OE radio data bus remains connected. I have this harness in my inventory, but I am in Edmonton, Canada..

Posted on Aug 07, 2009

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Posted on Jan 02, 2017

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Here is a link with a factory service manual showing step by step procedures with pictures and diagrams. 2006 Dodge Ram Service Manual

1. Disconnect and isolate the negative battery cable.

2. Using a trim stick C-4755 or equivalent (plastic trim removal tool from auto parts store),
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You mite call a aftermarket installer an ask or the dodge dealer

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