Good Evening from San Antonio TX. I am very lucky to have found this forum and appreciate the opportunity to share information and ideas from quite a bit of history in the 12 volt arena. My current project is a 2007 Tahoe; very stealth. I'm in the planning stages at present. I plan on utilizing the factory changer, and keeping the steering wheel controls and XM along with OnStar. So thats the plan. Now for the selection of equipment and execution of the install. I do have an EQL Audio Control in house so I guess you could say I've started <G>. Anyway, I appreciate the venue and look forward to the assistance and assisting. At 62 years of age, if it's too loud, you're too old !! Best Regards... R