Follow up the fuse box feeds off 2 separate buss bar's. The 1 on left feeds the left side of box and left side of fuses and is constant 12 volts. The 1 on the right feeds the right side of box and fuses and is switched on during run or accessories. The dash feeds off instr fuse and the acc. terminal feeds off the acc fuse.

So while they were on different fuses the feed to the fuses was the same. The problem was caused by either a poor connection on bulk head or switch.