Confused, need wiring help!!!

Trying to install a CB Radio in my 2004 TB, for the life of me, I cannot find a 12 Volt wire that activates when ignition is on. Can anyone help me please????

The running lights should have a 12 volt ignition-switched wire. Just us a relay between the two.

Coming from under the dash, going along the driver's side of the center console and back to the fuse box under the driver's side rear passenger there is an orange wire that is hot with ignition. It is thicker than the rest in the bundle (apprx. 14ga.) and you may need to dig some to get it out--especially if you are try to tap into it under the console. Remove some of the wrap CAREFULLY with a razor where you want to tap in so you have enough space to find it without risking damage to other splices. The easiest place to get to it is by the interior fuse box.

I wouldn't overload the circuit since some GM engineer was paid good money to figure out how small they could make that lead. I have personally run a police scanner directly from that line, but I used an electronics relay to step off for a 110v inverter I installed (the small relay only draws about 500mA and can handle 10A itself, so I used it to step up to a relay which was drawing 2.75A that could handle the 75A load I needed).

The rear fuse block also has a nice constant, high amp post on it for attaching accessories and the studs holding the back side of the fuse block seem to be better grounds than the fronts--for some reason.

Hope this helps.