billydsz

Thanks guys I finished the work. After reconnecting the neg term, I only had to do the window reset, reset the dashboard clock, and the recent mpg's and trip data was reset to zero in the computer. Also the hvac system was completely off, just had to turn it back on. Oh and my audio settings (Bass, treble, etc.) were set to default. I haven't even looked at my radio presets yet I forgot. But that was it. I didn't have to enter a code to get the nav/audio system back up. (Some OEM car radios have this as a theft deterent).

edit: you lose the radio presets, I finally got around to checking it. Not a big deal, but a pain to reset them all.

ps
I had to pull the head unit out to add a mod. If you don't disconnect power when disconnecting factory connectors you can have error codes that require a reset at the dealer. Also you could short something out too and cause serious damage.

Thanks for the replys.