Cadillac Repair: 1981 Cadillac sedan deville electrical, electric door locks, cadillac sedan deville

Question
interior lights won't work, radio quit, electric door locks switch won't unlock the doors.  Only 84k on car.  Could it be a fuse blown?

Answer
You will need, If necessary, Electrical schematics, Test procedures and picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture.  I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information.