Help!!!

[jmag86]

Hey I need help with a problem on my 86 c10 it was fine before I got it bagged and now everyting seems to be going out on it. First my alternator when bad I figured due to the dual compressors so I upgraded to a 200 amp alternator and a optima battery. Next my radio and horn went out then I started having problems with my tail light and turn signals as I wrote in previous thread...turn signals? But now none of my lights work.....tail lights, headlights, turn signals, dome lights, none?? I checked fuses and all where go, what can be causing this and where can I start looking?? I ready to pull my hair out! Its 86 c10.