Originally Posted by jr's3800
sounds like a body control module issue, with the retained accessory... Any Ideas anybody?
The interior lamp circuit seems to be grounding itself at random intervals. This will not blow any fuses, since it'* a switched-ground circuit to begin with (i.e. all its components are always hot, just waiting for a ground path to activate them), but it does mean that the lights will come on whenever the loose connection touches a ground. Since opening and closing the driver'* door affects the problem, I'd start by looking that over real closely.
Maybe a pin switch is going bad or there'* some damage to the wiring harness, especially where it jumps the gap between driver'* door and door pillar.
The Retained Accessory Power will keep going (e.g. the radio and antenna) until it'* grounded by opening a door, so if it fails to detect that, it'll stay active. I'm thinking that'* what happened at the time you returned to the car and found the antenna still up and the radio going: if it was daylight at the time, perhaps you didn't notice that the interior lights didn't go on when you got out of the car previously? (It must have been within 10 minutes of your returning, or else the RAP would have timed out by itself anyway.)