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Guest Message by DevFuse

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Head unit wires and connectors


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3 replies to this topic

#1 irv

irv

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Posted 05 March 2019 - 04:18 AM

Hi, I'm trying to figure out the wires for my 2012 NVP 3500 SL. I just recently bought it without a head unit, which was OK with me because I had planned to install an Android head unit anyway (I've installed a couple using adapter harnesses). But I didn't realize that the previous owner cut the original connector off and crimped directly into the wires. Now I can't figure out what the wires are supposed to be exactly. There are also 2 other free connectors attached to the wire bundle that I thought could also be used to connect to the radio, but neither fits the Metra wiring harness adapter that I purchased for Nissans 2007+. One seemed similar enough but the location of the raised plastic on the connectors are offset from the metra adapter and so wouldn't fit.

 

I tried to read through the service manual but it's confusing to me. I'm checking out the AV section, I'm guessing the previous owner had cut Connector No. M44, and the white connectors I see must be Connector No. M46 and M85. I was going to compare the diagram with the actual connectors, but I can't decipher some color codes. Is there a legend or can anyone shed light to the following color codes:

- L (for front door speakers)

- SB & LG (for steering switch signal a)

- BR (illumination control signal)

- GR & LG (steering switch signal B)

 

I also noticed there are colors that seem to repeat... not sure how to tell which is which without the pinout position (like Ground shows up several times in different colors). I probably need to read through this again when I'm not sleepy. But if anyone has tips on how to sort this, I'd appreciate any help :)

Attached Files


  • radin2son likes this

#2 ASD Dad

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Posted 05 March 2019 - 11:38 AM

Does this help?

 

This is the radio color codes

https://pdf.crutchfi...0/120707552.PDF

 

This is the steering wheel color codes

https://pdf.crutchfi...20/120ASWC1.PDF


  • radin2son, Mark Rogers and irv like this

2015 NVP SL - Silver, 20% tint, Bully Dog GT, AEM filter w/ snorkel mod, Topper Rack, Luverne Grip Step running boards, Goodyear SilentArmor Pro Grades. DRL delete, LED's
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Blue Ox Sway Pro with Tekonsha P3 controller
Me, wife, 3 kids and 2 big dogs!


#3 Mark Rogers

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Posted 05 March 2019 - 01:02 PM

It's bad enough that they used crimp connectors.  But seeing those cut wires is like rubbing salt in the wound.  Whoever committed that crime needs to have their wire strippers revoked until they learn how to do things the right way.


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#4 irv

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Posted 06 March 2019 - 12:44 PM

Thanks for the PDF links, those should be helpful with the wire colors! I hope I could finally use it to install the head unit this weekend.

 

Yeah no kidding about the mess he left. I did use the absence of a radio to negotiate the price lower, I should've pushed more had I known how bad the wires were hehe.


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