AK_Ghost

Am chasing this problem currently. 1990 Legacy blows fuse #15, taking out power windows, tach-gauges, AC, and seatbelt. Problem pops up every couple of weeks. Have repalced the fuse multiple times now with no identified common cause. I think I have found/checked all the grounds and connectors along this circuit, but haven't found a good wiring diagram to be sure. Wiring resistance reads normal, and wires apear in good shape. Any suggestions?