99 gran marquis electrical problem

[alhoffman]

my 99 mgm has developed an electrical problem. it lost power to door locks including key less entry on the door, power mirriors. interior lights, and the auto climate control. i found a blown 15 amp fuse that suplies the lighting control module replaced it and it blew again. i made a test light pluged it in where the fuse goes and the light shows a dead short. removed the auto climate control... and the light stays on still a short some where.... now with the test light in the fuse spot. with the door open the test light stays lit.... when i close the door the test light dims and i buzzing noize starts out soft and starts to get louder as the test light dims..... the buzzing noise seems to be coming from a control with a couple large cables pluged into it,,,,,, could this be the lighting control moduel.

need some help here please AL.