A few small issues, but in all, everything appeard to work well.
1. Flaps were backwards; just swapped the pos & neg power leads
2. Comm backlight would not work. This was due to me misunderstanding the wiring diagram. I did not connect the "panel dimmer" line because I'm going to be day vfr only, so I didn't need a dimmer. Turns out the dimmer line pwers the backlight so I'll need to patch-in a power line for that pin.
3. Transponder works but does not power up as I expected. Pilot must press the on/off button on the face of the xpnder in addition to flipping the transponder power switch on the panel.
EFIS appears to work well; was able to page thru dfferent displays; GPS acquired a fix and showed me on the map just fine. Have not gone to a configuration/setup pate yet.