My switch is inline with the coil pickup in the distributor. Is this what you're referring to as "camshaft sensor", dcb?
The engine occasionally stumbles when it's used. That could be dieseling from fuel still coming through the throttle body - I don't know. I've never tried any other method.
My repeated advice - regardless of method chosen - use a momentary switch, not an on/off one. (Safety implications. You would think after hundreds of uses that you'd always remember to turn it back on, wouldn't you?
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