OMG....I cannot believe that it has been 3 weeks since my last update. I've been making forward progress with lots of design issues almost overcome and ordering small parts here and there. I have most of the wiring, connectors, relays, circuit breakers, grounding buss, and other minor items either on the way or already here. I kept going back and forth on the Avionics master relay and finally decided to keep the switch and associated relay. Reading AeroConnection is very helpful but there are some ideas put forth that were conflicting with what I was seeing in other builds. I think I've mentioned this before but the quick evolution of newer technology has outpaced some of the suggests made in older avionics examples. Another example is the TWC battery back-up system, which included all the diodes and circuitry that protects devices from being backfeed when in use. The Garmin avionics also have connections for primary power and back-up power so they know when you are on ‘main' vs. ‘back up' power. You can see below the modifications made to my circuit breaker and I worked through the ‘E-Bus', Avionics bus, and main bus. I think I now have it all figured out! I have all the CHT/EGT wires run through the FW along with ALT and Starter wires. I missed ordering butt splices and male spade connectors to connect to the fuel pressure, oil pressure, and oil temp sensors and I don't want to use ‘automotive' grade so i'm waiting for those to come in from ACS. I'll continue with finalizing the grounding strip and various other items when finish up all the FWF wiring this next week. I'm getting a feel of the Garmin G3X manual and once I have the FWF devices through the FW I am optimistic that progress will speed up! Prop should ship this next week and I'm working on my FAA 8050-3 Registration paperwork for N45HS (reserved number took 12 weeks for approval!).