I can't take credit for the wiring diagram. It was drawn by a friend and fellow ePure owner. But I did sign off on it, so blame me if you find an error.
A wiring diagram is a basic necessity that should have been provided by Electric Motion.
Note that I sometimes refer to “ground” in various parts of this website. Understand that to mean the negative side of the battery which is also sometimes called “return.”
Nothing in the bike's circuitry is electrically connected to the chassis.
Lanyard Kill Switch
I'm defining “deadband” as the amount the throttle must be mechanically rotated before it causes any movement of the motor. Think of it as adjusting the throttle cable free-play on an internal combustion engine. (Additionally, the controller itself will have a setting for the voltage at which the throttle begins to take effect. Kelly calls this parameter the “effective starting voltage.”)
There are a pair of gears in the throttle handle that require an alignment for proper operation. This limits the change to an integer number of gear teeth. Unless you have disassembled the throttle handle, realignment of the gears should not be necessary. However, what may be desirable is a small change in the orientation of the potentiometer. Electric Motion made a video on this procedure. A screen capture of the most relevant part is shown below. Basically, you need to loosen a locking screw that bears against the potentiometer so that it is free to rotate. Rotation is then accomplished by carefully prying against the wires.
A few degrees of rotation can make a big difference. Personally, I like having almost zero free play. I expect Magura/EM sets the throttle up with “excessive” free-play as a safety feature.
5 k ohm throttle potentiometer
Credit: EM, Magura deadband adjustment