Electrical Problem

i need help. this is what the problem is. i keep blowing up a fuse in my car (1988 BMWE30 M3) that controls the tachometer, water temp gauge, fuel gauge, aircondition, power mirrors, and back-up lights. They are all not working obviously. Any ideas? Could it be related to the instrument cluster? It somewhat started when I messed around with the cluster. Please, any info would be helpful!!

have someone check the output voltage on your alternator