So, I got fed up with the way the wire exits the axle. I actually hadn't really thought through how I was actually going to get the nut on the axle after I had gotten the wires through the peg because I was kinda preoccupied with other aspects of the bike.
Originally, I didn't think I could modify the axle to slip the wiring under the bearing and have it exit WE style because it was already hollow, and a big enough notch would make it much too weak. Then I realized I could swap the cover plates and mess with the OTHER side of the axle. So I did. (Sorry there's no close-up pics; I forgot to put the SD card in the camera and was using the internal memory of the thing. I can't find my micro-USB cable right now, so I can't get them off the camera.)
After a bunch of wiring and soldering was done, I actually got everything mounted on the bike itself. Haven't covered up all the connectors yet because I haven't been able to make sure everything works right.
Mebbe I'll finally get my bench cleaned off after I'm done with this bike.
Then got to work on the box again. Soldered up a few more wires and fuse holders to the battery.
Then added some wiring to the relay I'm using. It's a 12V relay, but I shouldn't have any issues with accelerated contact wear because I'm going to put a precharge button on the box. For now, I'm running the coil off a tap 3 cells deep into the pack. I'll let the BMS take care of the imbalance until I can get a few fans wired up in series with the coil to drop enough voltage to run it off the pack.
Then got the power switch mounted. It's just a latching on/off pushbutton switch from Radio Shack.
I would have actually finished today, but I wasn't paying attention when I bought the momentary pushbuttons to use for precharging the controller. I only saw "momentary pushbutton", and completely overlooked the very obvious "N.C." (normally closed) text on the package. D'oh!
There's no pegs on it right now because I didn't have any socket wrenches big enough to use on the axle nuts and I forgot Home Depot closes at 8:00PM on Sunday.
Oh, I dished the motor's rim hilariously badly. I can barely adjust the brakes enough to make them work. Mebbe fix that at some point.