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Giant hub light
i have a giant rs3 bike with a hub powered front light, there are three pins on the light but only 2 wires, also at back of light is a rubber cover, is this an off/on switch?

have connected in various permutations, but is not working, can anyone help?
Ok not a pro on these but to save everyone trouble here is a link to all the dynamo hub technical docs shimano makes....;jsessionid=8MSGNfxB4L1877g2lDRGPC6RLNnDBTyRn4nK2GM1jj2TwL8g2QtW!12948​12215?FOLDER%3C%3Efolder_id=2534374302051168&ASSORTMENT%3C%3East_id=1408474395181679&bmUID=iWfgfVN

Not sure which one is yours.


P.S. here is the stats on your bike.....
Good maintenance to your Bike, can make it like the wheels are, true and smooth!

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