Have a 98' f-150 stx and having problems with the interior lights staying on after closing the doors. This happens also at times when driving (door ajar) but normally goes off after anywhere from 5 seconds to 5 minutes. At times the lights go off, but the "door ajar" stays lit. Have drained one battery already, and have now been pulling fuse #14 before I drain another. Is it the door switch itself, a relay, ??? Any help would be appreciated...