2007 tahoe accessory wire +

Used a DMM right?

Same brown wire: http://www.designtech-intl.com/main.asp?action=select&yr=6217&product=Remote%20Start&make=Chevrolet&model=Tahoe#My ex once told me I have a perfect face for radio.

Take off the driver kick panel, there will be a connector about 3" wide with about 10-12 wires in it, on the firewall side of the plug you will find a thick purple wire, right next to it will be a dark green wire, this is the wire we use for 12v+ accessory.  The pink wire shown in the guides are supported by a factory 2 amp fuse that if blown will not let the vehicle start so be very careful of this wire,,,,