2004 Grand Prix Antenna Power Wire

I'm wiring up an aftermarket stereo in my '04 GP GT. No premium stereo or anything. The last stereo I had in this car didn't work with the AM radio and as I put in a new one I realized it's because I didn't connect a wire for turning on the antenna amplifier for AM reception. This wire doesn't come out through the standard adapter harness so I'm trying to find it in the stock harness but I can't find a reliable wiring diagram that points out which wire it is. Anybody have any idea?

Nevermind. Got it fixed, there was a wire labeled wrong on the harness and once I was able to apply a test voltage to it I got the radio amp working. Thanks for looking.