Pontiac Repair: 2000 PONTIAC GRAND PRIX GT, 3.8 L ENGINE, AUTO TRANS, light fuse, fuse blows

Question
THE INTERIOR LIGHT FUSE BLOWS.  FUSE IS REPLACED AND AT NO REGULAR INTERVAL, THE FUSE FLOWS AGAIN.  I HAVE HAD NO SUCCESS FINDING A WIRING DIAGRAM SHOWING THIS CIRCUIT.  
I NEED HELP.

Answer
Hi
Please follow back post , clicking the private box.
Also PLEASE tell me the EXACT fuse (INT LAMP, IP IGN, MALL, etc..) and just to make sure, it's located in the passanger side fuse box (accessed from the glove box?)
I'll email you a schematic, IF POSSIBLE.
Thanks
PAwl