Question about Car Audio & Video
a 6ya Technician can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Technician (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
I'm guessing here, but power is usually a red, thick wire. seldom yellow ( old Pioneer)
Ground Is usually a thick black wire.
Amp turn on blue.(thin)
If it isn't, it ought to be.
If in doubt don't try it , check with a installer.
Fuse at battery!!!!!
Posted on Jun 11, 2008
SOURCE: i have a orion xtr2250
for information on your amplifier including wiring schematics got to this address:
and enter in your amplifiers information all files are in PDF form so get adobe acrobat reader its free download at download.com
Posted on Feb 04, 2009
I dont believe its used in your situation .
here is a rundown
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: The radio harness does not provide a switched power source. Run a wire to the fusebox or ignition switch harness for switched power.
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: Brown
Car Stereo Dimmer Wire: Gray
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue
Posted on Mar 27, 2009
You may wish to consider purchasing a wiring harness that will allow you to plug directly into the vehicle harness without tapping or splicing. Here's a link to one such item: This one appears to be for your vehicle.
Installer.com shows the following color code for the radio and speaker wiring for the 2007 GMC Sierra.
Red: +12volt Acc Switched
Yellow: +12volt Battery Constant
Blue/White: +12v Remote Output (Amp Turn On)
Red/White: Reverse Light Trigger
Yellow/Black: Parking Break Trigger
Orange/White: Auto Illumination
Blue: Powered Antenna
Brown: Phone Mute (optional)
I would recommend that you verify the speaker wires before doing any splicing.
Attach a speaker to a pair of test probes and leaving the harness in and working, probe the back of each pair as coded above to insure that they really are the correct wires. Most likely you will want to convert the rears to low-level, so start with those. Probe the Violet(+)/Violet Black(-) pair and you should get sound in your test speaker. Likewise, do the Green(+)/Green Black(-) pair.
The only other wire you would need from the stock radio for an external amp would be the blue/white turn-on lead and if your LOC has audio sensing turn-on, you may not even need that. Bring power to your amp directly from the battery (fused according to amp manufacturer recommendations) and find a ground within 3 ft or so of where you intend to mount the amp.
Hope this helps.
Posted on Mar 28, 2009
Tips for a great answer:
May 24, 2016 | Cars & Trucks
Apr 03, 2016 | Cars & Trucks
Nov 13, 2017 | Car Audio & Video
Feb 03, 2010 | Buck Toyota Rav4 2003 Stereo/radio...
Jan 10, 2010 | Pioneer AVH-P6500DVD Car DVD Player
Jan 02, 2010 | 1999 Hyundai Accent
Apr 05, 2009 | 1998 Honda Accord
Oct 09, 2008 | 2002 Hyundai Accent
Sep 16, 2008 | 2002 Mitsubishi Lancer
Jan 23, 2018 | Pioneer Car Audio & Video
74 people viewed this question
Usually answered in minutes!