Stereo Constantly on

Since the stereo works with the key off and the CB doesn't but you want it on all the time, maybe you could switch the wiring at the fuse/relay box.

 

The radio itself does not have a ‘power button’ or on/off, somewhere?

 

Did you check these two with a volt meter before putting it in the slot?

 

Why is this undesireable?
Lotta time if im sitting with truck off i still want my radio on.

Got so i normally splice yellow and red
If you get real fancy and like me also really dont like the radio turning off every time you start the truck (disconnects radio, ande therefore bluetooth on crank), run new direct wire to headunit from house batteries, (fuse your positive at the battery in a weatherprotected inline fuse)

If worried about parasitic draw, either remove headunit face on parking for a while, or add a dash mounted switch to kill power

 

He wouldn't have to switch, he could run a jumper wire off the red to his cb. I'm confused as to why it's a problem to have access to the stereo while the key is off? I ran mine that way, along with ,2 small amps straight to the batteries as well as a flat mini powered sub and played it all the time with key off and never had no problems starting the truck.