Sounds like your turn signals are wired backwards and are grounding out on the forks. I had the this happen with K&S turn signals from British Customs. They had two wires, a black wire and a black with a white a stripe. Turns out the black with white stripe is the ground on most aftermarket turn signals. I naturally assumed the black was. Swapped them around and was good to go.
2006 865 Neon Blue/Jet Black Speedmaster,790cams, TTP Stage 2 Firestarter, Epco Exhaust with 10.25" Samson Vrod baffles, UNI pods with 40 pilots, 150 mains,Thruxton needles, 3 turns out.
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