Ok, so I bought my first electric scooter a few months ago and have fallen in love with them. At the time of the purchase, I had never heard of dual motor scooters and therefore it didn't occur to me to do much research outside of what my budget could afford, and I renewed up choosing the Kukirin G2 Max, and while I love it, it NEEDS 2 motors.
I tried selling it locally but I just got offers from the little weed dealers in the area trying to lowball me, so I kept it.
Then I start reading about modifying my scooter and I stumble across this post [https://www.reddit.com/r/ElectricScooters/s/1YJcyGiIzG](https://) where the OP only briefly described how he successfully did a dual motor mod on his G2 Max, so I said I'd do the same. I'm no stranger to modifying almost everything I own so I had a great start.
So far, I have the second motor mounted on the front swingarms (I'm actually replacing the stock fronts with a new set of rears to accommodate the motor properly instead of the hack job on the front ones that was not safe. I also have a second G2 Max controller wired up.
I have 2 identical motors and 2 identical controllers. Each motor is connected to hall and phase on its respective controller. The controller gets power from an xt60 splitter cable and I have a Citylion external battery on the way to increase the range and compensate for the additional power draw of 2 motors. I have everything so far, wired up nicely and professionally.
The original controller is wired up as expected. The second controller is wired to HALL, phase, and power, but here's where it gets tricky so if you've read this far, stick with me...
I'm trying to split the signal from the throttle, so it will spin both motors at the same time. I'm not overly concerned with the second controller communicating with the lights and stuff because the original one handles that and I primarily use my rear brake and if I use the front, it's always along with the rear brake so E braking shouldn't be an issue...I think.
There real problem is that I'm not sure what wires to bridge from 1 controller to the other. Both controllers are exactly the same with the same model number so the wiring colours match.
Oh 1 of the connections there are 5 wires: red, black, green, yellow, and orange. The red and black obviously are power and register 48v when probed with a multimeter. I also get 48v on one other colour, 2v on another, and 4.2v on the GREEN, this is important.
Since I'm very new to this game, I'm asking lot of people, including Chat GPT , my questions, so forgive me for being naive, but I'm still learning.
Chat GPT tells me that the throttle voltage varies from like 0.8v to 4.2v depending on the throttle position. So low and behold I think I've found the throttle signal, so I add some crimp splice but connectors on green and black (to provide continuity of gnd) but when I tested it, the front motor wasn't responding. So then I thought maybe I should bridge 4 of the 5 wires, the 5th being VCC and I'm not THAT stupid. I splice and connect black, green, yellow, and orange and try to test it again.... Same story, front motor doesn't move.
I tested each motor separately on each controller, separately, and all 4 pieces of equipment are working at expected and not faulty, so the problem I have is literally getting the second controller to respond to when the original first one does, and for it to stop accordingly as well.
Here https://photos.app.goo.gl/uucwUDkjQVJuALMh7 is a pic on my Google account that shows the 2 different connectors (I can't attach a pic to this post for some reason) and you can see the 1 connector has butt connectors on it where I was bridging it to the second controller, but that is not helping and the front motor still won't spin with the front when I press the throttle. I have the scooter raised off the ground for all the reasons necessary, lol.
Please, for the love of all that's good in this world, PLEASE SOMEONE help me get this to work. I do know it's unconventional and it would be "easier" to just sell it and buy a G2 Master but that's not a possibility here so I really just want to get this working and I feel like I'm so incredibly close.
Can anybody help?
