Thanks for your help, Wright. The solenoid wire came loose at the solenoid connection, and since the wire was loosely dangling, it probably got caught in the drive belt and pulled out of the EHC.
To fix it, I had to take the EHC units off (Circuit Fault image), disassembled Connector A (Pin Identification image), and pushed pin A-1 out. It was clear that the wire had broken off, so I used a 1/6" diameter drill bit and drilled out the remaining wire that was still in the pin since it was secured in place because of the method the bike builders use of pinching the sides of the pin.
I then ran the wire back through the harness to Connector A and inserted about 3/8" of the solenoid wire (shown in the photo "solenoid disconnect" in my original post), into the pin, and pinching the sides with pliers to hold it firmly in place. I then pushed pin A-1 back into the connector and reassembled everything. Started right up.