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    1989 Yamaha Excel V6 225 No spark unless computer is bypassed

    Hello all! New to this great forum. I have a 1989 Yamaha Excel V6 225 that did run before. Now the no spark issue. Engine will not start unless we use the A & B connectors to bypass the computer. Any ideas of which interlocks (sensors, etc) would cause this? Thanks in advance.
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