2003 tahoe pioneer navigation

Printed From: the12volt.com
Forum Name: Mobile Video, GPS, and Navigation
Forum Discription: Mobile Video Head Units, DVD Players, LCD and TFT Monitors, Navigation, GPS, PS2, PS3, XBox, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=93390
Printed Date: June 28, 2025 at 9:48 AM

Topic: 2003 tahoe pioneer navigation

Posted By: jbaird
Subject: 2003 tahoe pioneer navigation
Date Posted: April 27, 2007 at 8:49 AM

I am going to be installing a Pioneer AVIC-Z1 in my 2003 Tahoe. From what I understand, the Tahoe does not have an illumination wire in the factory harness. Does anyone have an idea of where I can easily get a 12V source when the headlights are on that will allow my Z1 to properly dim/go into night mode? I have also heard that I can find a VSS wire piggyback in the factory harness (green wire).. can anyone confirm this? Also, any other non-standard wires/locations I should be aware of? Thanks!

Replies:

Posted By: KarTuneMan
Date Posted: April 27, 2007 at 4:56 PM

+12V DC Battery(Constant)	Orange		Radio	15 amp	Fuse block at left side of engine compartment
Ground	Black
Dimmer	BROWN / white
Steering Wheel Control Wire	Dark blue	Also light green

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Posted By: extreme1
Date Posted: April 28, 2007 at 12:02 AM

jbaird wrote:

I am going to be installing a Pioneer AVIC-Z1 in my 2003 Tahoe. From what I understand, the Tahoe does not have an illumination wire in the factory harness. Does anyone have an idea of where I can easily get a 12V source when the headlights are on that will allow my Z1 to properly dim/go into night mode? I have also heard that I can find a VSS wire piggyback in the factory harness (green wire).. can anyone confirm this? Also, any other non-standard wires/locations I should be aware of? Thanks!

Dimmer, BROWN / white @ heater control's
VSS, dk.GREEN / WHITE @instrument cluster
Reverse, lt. green at junction box, drivers kick

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Shaughn Murley
Install Manager, Dealer Services
Visions Electronics
Red Deer, Alberta

Posted By: jbaird
Date Posted: April 30, 2007 at 10:32 AM

Thanks!

Posted By: jbaird
Date Posted: May 07, 2007 at 7:46 PM

I can't seem to locate the dimmer/illum wire. Which harness is it in?

Posted By: extreme1
Date Posted: May 08, 2007 at 8:21 AM

I have always grabbed it at the heater controls harness. it is BROWN / white, you can also grab BROWN / white at the light switch

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Shaughn Murley
Install Manager, Dealer Services
Visions Electronics
Red Deer, Alberta