My boss has been away for several weeks, it's been pretty relentlessly hot up home, I had a day's training course in Melboune then my co-worker has his turn a couple of days later - so being we're only a small team it's been a pretty hectic couple of weeks and I've mostly been too knackered to even think about the bike when I've got home. So I still haven't redished the rear cog, swapped the spring, or fully bled the brakes. But I did finally install the electronics today. Pretty unsprisingly - it shifts superbly. The gearbox itself is quieter than I remember while JRA, and claims of drag seen everywhere online seem greatly exaggerated. The electronic shifting does make a funny little whirring noise when shifting, but it's fairly inoffensive - much akin to a AXS derailleur I suppose (maybe a touch louder, but then no chain clunk that follows). Most shift are
very quick, but the "range change" shifts where it shift between gearset groups (4-5 shift, and 8-9 shift) feel like they take about a second. Interesting to see how this translates on the trail, but at least you can "pre-select" gears while coasting or stationary (I am greatly looking forward to being able to 'pre-select' a downshift on descents). Today I only rode it round the block until (A) I tidy up the other bits and pieces, and (B) because it's feels like about 90% humidity outside and it's forecast to be 37°C today. Maybe next weekend I'll take it for a spin given I'm coming off zero fitness and I don't want to have a heart attack on the first climb.
As part of the installating the electricals, I also mounted up my standard OneUp pump and multi-tool, some Lezyne tyre levers, and err... (CotFW?) WolfTooth chainbreaker pliers...

. Well, they fill in the gap needed to hold the tyre levers in the OneUp pump holder, and I think I've only ever used it for other people in the past anyway. It's always nice to have some tools on board for the bros and broettes out on the trails or in the group-ride I reckon.
Ended up installing the majority of the cabling inside a little aluminium electrical housing and using the standard Zerode 3D printed battery holder (it mounts on a long plate that attaches under the water bottle mounts and is double-sided taped to the frame. I will be interested to monitor how that holds up over time as I feel like eventually the adhesive will let go... I used car body panel sealing plugs that I pierced holes into with a leather belt hole punch tool to seal/vibration-dampen/protect the cables from wearing on the housing. I will probably install one more so I can feed a charging cable back out of the box, but currently I left it disconnected as it already looks like the insides of a Peter Brock 'Polarizer' inside the housing. The box is also not properly waterproof currently, so now proof of concept is done I probably need to seal up the spare connector(s), rubber body plugs and the lid - but I did as a precaution apply some drillium to make some tiny weep holes in the bottom of the housing in case of water ingress. I might paint the box black, or attempt to polish it up some in time (I doubt it will polish well being cast ally though...), but currently I am getting a chuckle out of the "Prototype racer, data acquisition" look of it - as anyone who's seen me ride can attest I'm about as far from being a racer as you can get!

Ended I got the aluminium housing from Jaycar (~$13 AUD, coould probably get cheaper off AliExpress but I wanted to judge to size/quality in my hands rather than wait weeks from overseas only to get the wrong thing). Got the sealing plugs from a bulk-pack at work, but most good automotive stores should have them (ie: Bursons). It cost me more to buy the step-drill to drill the holes than to make the whole housing in the end.