If you're comfortable opening up your motor and/or controller, Grin sells a 1 metre long L1019 extension cable for C$28. IOW, cut it in half and you now have your two pigtails. I'm contemplating doing this...
A3 = wheel lock; it connects to an alarm, which engages the wheel lock when the alarm is set. This is mostly intended for the sit-down, "DUI"-type scooters; it is not regen. I just learned this too, so...yeah! Cheers.