Can someone help me please??

MyersB91

Finding my (electric) wheels
Jun 11, 2025
5
0
I have no idea what wires go where. It was already a mess when I opened it up as there was a bunch of wires not connected. Was just trying to get it to go faster lol. Then tried putting it back and no lights are working besides the headlight, but doesn’t shut off by the button like it did. Also the horn doesn’t work

63463
 

sjpt

Esteemed Pedelecer
Jun 8, 2018
3,994
2,835
Winchester
More details would help.
Make, model and year of bike.
Any identifying marks on the controller.
Any identifying marks on the battery.
Any identifying marks on the motor.
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
8,625
3,897
Telford
We've got no chance of helping you from the information you've given us. At the moment, you've just shown us a birds nest with no indication of which wires are coming or going.

You need to first of all list all the cables coming out of the controller with the colours of the wires, then you need to do the same for the cables that come to the controller. Most of them come from the handlebars, so say which ones. Show us photos with all the wires spread out so that we can see them.

You'll also need a meter to check which wires have battery voltage. if you connect any of them to something that it shouldn't connect them to, it's instant death for your controller and much of what's connected to it.
 

MyersB91

Finding my (electric) wheels
Jun 11, 2025
5
0
We've got no chance of helping you from the information you've given us. At the moment, you've just shown us a birds nest with no indication of which wires are coming or going.

You need to first of all list all the cables coming out of the controller with the colours of the wires, then you need to do the same for the cables that come to the controller. Most of them come from the handlebars, so say which ones. Show us photos with all the wires spread out so that we can see them.

You'll also need a meter to check which wires have battery voltage. if you connect any of them to something that it shouldn't connect them to, it's instant death for your controller and much of what's connected to it.
Would a video help?
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
8,625
3,897
Telford
You missed out one. It's the large flat white one. Does it go to the motor?

Now we need to see everything on your handlebars.

I just fixed one very similar to that, which had a blown controller, but the owner only wanted it to run from the throttle and the front light to work. Unfortunately, the wires had all been hacked, so I didn't do anything with the unnecessary ones. I Traced many of the wires and made notes. I'll have a look tomorrow to see if I can find them.
 

MyersB91

Finding my (electric) wheels
Jun 11, 2025
5
0
You missed out one. It's the large flat white one. Does it go to the motor?

Now we need to see everything on your handlebars.

I just fixed one very similar to that, which had a blown controller, but the owner only wanted it to run from the throttle and the front light to work. Unfortunately, the wires had all been hacked, so I didn't do anything with the unnecessary ones. I Traced many of the wires and made notes. I'll have a look tomorrow to see if I can find them.
it actually wasn’t connected to anything when I opened it up

don’t think it really helps
 

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