fitted the 8Fun kit today. But the speed sensor cable is to short.
You can see the unusual mounting point for the mid drive,in front of the front wheel. The sensor will never reach the back and is still short of the front wheel?
Can't view pics so assume its for the recumbent, as the speed sensor is only 3 wires or maybe 2 easiest option is to splice in a new piece of cable with solder and heat shrink, Thin 3 ore servo wire would work.
Any supplier of the BBS01 should be able to supply an extension lead, my trike is about 1.5m motor to rear wheel sensor mount and 1 extension reached it just.
My supplier is no use to you as he is in Oz
If you want to use it in the mean time stick a magnet on the front ring and cable tie the sensor close to it, it will work without error codes but with incorrect speed and no speed cut off.