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Something in the Serfas E-Lume family, possibly a Serfas E-Lume 900.


So this is pretty straightforward on the Giant Roam E+. There is a wire harness that you can access at the top of the frame just below the battery. There is a small cap. In there you'll find three wires. One is a mini style jack to connect the control switches. The other two one is yellow/gray and is 6 volts switched to the light switch, the other is ...

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