Working through the instrument panel wiring to do list 1) Power from ECB4 to SPST LSw3 for ignition coil power 2) Power from ECB7 to SPST RSw4 for transponder and SP-12 GPS power. 3) Power from ECB6 to LSw1 for starter solenoid power 4) Added 12 gauge wire to sub-panel inboard ground terminal, wire run to ground point on firewall.
Continued cleanup and bundling of wiring behind the panel.
Found that Aircraft Spruce has an LED light that will fit a switch mounting hole, 12VDC input, internal current limiting resistor, with a couple of screw terminals (https://www.aircraftspruce.com/catalog/elpages/indicatorlamps13-15811-5.php). Mounted a red to indicate (Part# 13-15812) of power to the turbocharger bearing cooling system. The system gets power from an always active firewall fusebox. The circuit has a manual and automatic mode, with the auto mode switched by a 250degF thermal switch in the coolant line. The light serves as a warning that the cooling circuit is powered after shutdown.