1987 560sl # 12 fuse keeps blowing

[dialric]

Got in the sl last night, i saw the clock was not working, went for a ride and found out the radio was out also. got home and found # 12 fuse was blown.. i tried a couple more fuses, same thing happened instantly. Everything was working fine for along time. Car was driven and has not been in storage. I decided I would try to fix it myself with your help. I could not find anything about my problem on this site. I really dont know where to begin but I need a diagram of the circuit for fuse # 12 And as much input I can get to correct my problem from all you Sl pros. thank Richard