ok im new to this site .i own a 1984 cadillac eldorado 4.1L well heres my problem .my instument panel light went out .now when i turn on the head lights the a/c and temp panel turns off only when the headlights are on . im not sure what fuses to check or where they are located will somebody please help

 

cadillac cts appear a service stability system, more less how much will i be paying for this service