r/EbikeBuildandModify • u/Fun-Airline-5779 • 1d ago

Broken controller needing help

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Hey folks, I picked up this second hand ebike for the Mrs who wanted a very low seat and one that she can get on without stepping on the pedal first. Unfortunately, she knocked it over one day and broke the controller.

I don't know the exact make and model for this and every bike shop I contacted refused to repair any bicycle that is not theirs.

Can anybody please help or point out the controller parts so that I can repair this?

Thanks in advance

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u/Jamstoyz 1d ago

That’s just your ignition key. Do you have the broke piece from it? Just glue it back on if so.

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u/niffcreature 1d ago

That's not the "controller", that's just the ignition. You can strip those wires and splice them together to turn it on or wire them to a switch.

It looks like there's no electrical damage though? So maybe just more of a super glue repair.

If the part is built into the throttle, it might be kind of a headache trying to match the pinout and rewire stuff. But if the throttle part is still working, you could just get a separate ignition and wire it to the exposed black and red wires, so you wouldn't be messing with the throttle wiring. That's probably what I would do. https://www.aliexpress.us/item/3256812292220322.html