'03 Yukon - Which Wire Is 12V SWITCHED???

[PJS3]

This is probably the simplest question to others, but I just can't figure it out. I can't seem to find a wiring diagram for my '03 Yukon anywhere online...

I'm installing a Parrot 3200 Bluetooth Adaptor (finally, someone will get a hit on these terms in future searches for information on the site... I was coming up BLANK ) and the only real electrical connection I need to make manually is to a 12V+ SWITCHED LEAD. The quick connect harness makes all other connections a piece of cake... It's just the power that I need to connect. I can't figure out a SWITCHED 12V lead to tap into...

I don't have any electrical testing tools by the way.

Can someone PLEASE tell me:
1. Where exactly under the dash I can find this wire.
2. Exactly which wire is it on my 2003 GMC Yukon x/Bose, On-star

Again, probably a very "simple" question, but admittedly I'm green on this truck...
Any help is/will be greatly appreciated!

 

[JKmotorsports]

03-up GM trucks use the Class II databus protocol, so there is not a switched (acc) source on the class II stereo harness. You'll have to gain access underneath the driver side dash or fuse panel. There is an orange 12 gauge wire in the key cylinder harness that you can use for switched power.

 

[Gordo]

if its for your amp what I did is I found a remote underneath the second row seat. if you have seat warmers in the second row you can find a remote back there im not sure which wire it was but i think theres only like 6 wires and its not any of the orange ones . the only thing with this is that once you shut off your truck it wont work with the aux power anymore it will only work when your truck is on which i think is fine because it help prevent the battery from draining

 

[05LS]

also if you want, you can go to:

http://bulldogsecurity.com

they have wiring diagrams for about any vehicles (mostly alarm based) but it will give you an +12v location.

 

[PJS3]

Thanks folks! I temporarily went with the option of just wiring directly from the windshield wiper fuse per direction from a tech at Circuit City... Seems like a pretty "ghetto" way to go about it, but I was at least able to get the Parrot Bluetooth adaptor working in time to surprise the wife for Christmas! She loves it!

I'll be tapping into the orange wire under the dash this week sometime...