While I have the panel removed putting in the upgraded rotor tach, I removed the capacitor I had installed before in hopes it would power the instruments during the voltage drop from engaging the starter, it wasn't enough, it only extended their run time a couple of seconds before they rebooted.
So, I removed the capacitor and added a switch to the lower panel that I'll flip before start-up to tie the small aux battery to the upper panel power via a diode allowing it to keep the instrument from rebooting. Once started, I'll flip the switch back off leaving the aux battery with its single, primary task of providing backup power to the governor.
