wow not worth argueing over guys.
I only posted that because Im a tech and I know how that stuff goes.
Bottom line, if you want "someone else besides yourself" to do a bypass, circuit city or best buy is probably not your best bet.
For me personally Id just write it right on the work order, "wired unit per customer specs" and make you sign it. (bobsyouruncle, that would resolve the liabilty issue. That one you're not going to shoot down in court, its not a blanket release of liability, it's specific). A lot of companies have strict rules about doing that kind of stuff though and the tech is putting his job at risk by "wiring something in a manner that it was not designed". Also the tech himself is personally responsible for his work. In other words he himself can be sued not just the company he works for. Its just not worth it.
As far as not signing the paperwork. If you came in my shop and refused to sign the paperwork... You'd see 1st hand just how fast a NAV can be removed from a dash LOL. Plus, don't expect me to reinstall your old radio. You'd be going home with a hole in your dashboard. Good luck doing anything about it. You owe me money, you'd be lucky Id be letting you take your car at all. Legally I could put a lein on it and park it out back inside my fence.
Anyways back to what I asked before.. Has anyone tried setting that to 0??? Zero might turn it off all together. If its OFF it might not care about the park brake. Worth a try.