Relocated main bus that I'd previously installed on the cockpit side of the firewall .Turns out I mounted it where the right hand CD ignition box mounts. I will relocate it to the center panel side support near the main battery. Marked and drilled/deburred mounting holes for both ignition boxes. Still need to fabricate the mounting standoff for the ignition boxes. Fabricated and installed the diodes on the Master and Starter solenoids to prevent backflow of current when de-energizing the solenoids. Routed starter, master solenoid and alternator field wires thru firewall pass-through fitting. Also routed the GEA24 engine harnesses (EGT, CHT, Oil press/temp, man. press, fuel press) through the same firewall pass-through fitting.