need help on a new build

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Last post
Last seen: 11 years 8 months ago
Joined: Friday, September 10, 2010 - 21:32
Points: 3
need help on a new build

I'm new to this eBike stuff. I've wanted to electrify my bike for some time, and a couple of weeks ago I bought a group of used parts. I got two 12v SLA batteries with covers and baskets, two brake lever/switchs, a twist throttle, a front wheel BLDC and a couple of controllers which were in need of some soldering. I was kind of surprised that none of the stuff has any identifying marks, so I cannot tell what make/model any if it is. I repaired the broken wires on one of the controller boards, charged up the batteries and plugged everything together. But it didn't work. There is one connector on the controller that I can't figure out - I don't know what it does or what it should be connected to. I've looked around in this forum and others and I have found only a very few wiring diagrams. I made a diagram of the stuff I have, let me see if I can post it here.
controller wiring diagram DBH12.jpg

In my sketch there is a controller which connects to a small panel with a battery/power connector, a switch and an LED; there is also a potentiometer which I suppose is a maximum speed adjustment; a connector for the throttle/brake system; a connector to the wheel/motor with 3 power and 5 control wires. There is also a 3 wire connector with red, black and blue wires. I don't know what this connector is supposed to do. I imagine that this connector is the key to making my equipment work. If anyone can tell me what to do with this connector I'd appreciate it.


Dave H

Last seen: 11 years 6 months ago
Joined: Tuesday, October 19, 2010 - 11:47
Points: 3
Re: need help on a new build

Try posting to ES website with your drawing. You may have better luck there.
Brian L.

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