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British Bikes / 1971 BSA 650 Thunderbolt
« on: May 10, 2013, 02:33:52 AM »
I have a 71 bsa thunderbolt and im wondering how the turn signals work? They seem to only flash properly when i rev the engine, at low rpm it just stays lit with no flash or it flashes very slow, is their a part i can replace to fix it so they flash properly?