I'm in havasu right now and this morning leave the marina and plan to head down to steamboat cove. Boat was running good until we got a bit passed copper canyon the boat started cutting out. When I say cutting out it felt as if you turned the ignition off for a split second than turned it back on. I looked at the gauges when it was cutting off and all the gauges would dip towards zero but would come back on before that point. I turned around and made it back to the channel and figured a loose wire some where, I checked all wiring and grounds in the engine compartment everything was tight. So I pull the ignition out and check the wires behind the ignition and they were all tight as well. So head back down to try it out again for further diagnoses and made it back down to copper canyon and it hadn't cut out once. So any ideas? I'm wondering if the ignition maybe has an internal short or if there was a bad connection and me poking and prodding around fixed it. Anyone ever had the same issue?

If you are losing electrical power, disconnect any connections and clean them. You could have corrosion. I turn wrenches for a living and that's a common problem especially on boats. You can buy cleaner spray that has silicone to help fight corrosion. But I use a wire brush first.

Thanks for the responses, a quick question the boat has a Mallory marine distributor with magnetic pickup and msd blaster coil and whoever put them on left the resistor wired in(assuming from when it probably had points?) Could this be the cause and also is the needed with this ignition set up or should I remove the resistor? Thanks

I took the resistor off and went from London bridge down to Parker dam and back today and ran great the whole time.