8 pin to 9 pin compatability

mzsupa5

Finding my (electric) wheels
Feb 27, 2024
14
1
I volunteer at a bike refurbishing charity and for reasons of liability they are reluctant to have anything to do with electric bikes. I have rescued a few bits and pieces from being scrapped. At present I have a complete Yose Power conversion kit apart from the motorwheel. I recently acquired the wheel from a purpose built Ebike which has 3 bullet connectors for power and a 5pin hall sensor plug (8 in total) rather than the 9 pin Julet connector of the Yose kit. Can this combination be made to work?
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
8,298
3,789
Telford
I volunteer at a bike refurbishing charity and for reasons of liability they are reluctant to have anything to do with electric bikes. I have rescued a few bits and pieces from being scrapped. At present I have a complete Yose Power conversion kit apart from the motorwheel. I recently acquired the wheel from a purpose built Ebike which has 3 bullet connectors for power and a 5pin hall sensor plug (8 in total) rather than the 9 pin Julet connector of the Yose kit. Can this combination be made to work?
Yes. You just need to join the wires colour to colour. Is there a 9 pin connector near the motor? If there is, you can replace the cable to the controller with one that has the female 9-pin on one end and the male on the other, which you can get from Ebay.
 

mzsupa5

Finding my (electric) wheels
Feb 27, 2024
14
1
Thanks, however I will be left with a wire left over there are only 8 wires going to the motor. Controller has 9.
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
8,298
3,789
Telford
Thanks, however I will be left with a wire left over there are only 8 wires going to the motor. Controller has 9.
The 9th wire is for a speed sensor. You need the speed sensor if you have an LCD to show the speed. If your motor only has 8 wires, it doesn't have a speed sensor. In that case you can buy an external wheel magnet type sensor and connect the signal wire to the white wire, and you power it by splicing the red and black wires to the red and black in the motor cable or throttle or pedal sensor cable. You can also use a two-wire sensor cut of a cheap cycle computer. For that, you connect one of the two wires to the white and the other to either a black or red depending on which one makes it work. Some controllers work one way and some the other.