Trying to install amp/subs to stock Bose system.. found a website that said the radio switched ignition wire should be green/orange.. but no such wire exists in my car.... kinda lost

I'm looking at the wiring diagram and it shows it as a green wire with an orange stripe. This should be coming off the right side of the 7.5amp ACC fuse in position #2 when you are looking directly at that fuse.
What year is your car?

At the rear cig lighter aux port is a green wire. This is switched 12V and is what is commonly used for remote turn on leads.