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Never ever have the donor car running while you jump a bike. Seen this many times over the years. Does it run ? If not i hope you did not fry the ECM. As Uncle Larry said remove the tank and start looking for tell tale signs of any melt downs in the wiring.
It makes no difference whether the donor car is running or not.
Amperage is drawn, not pushed.
The car battery has many times the amperage capacity of the alternator.
You can hook it up to a 12v battery as big as a house, it doesn`t matter, the battery will only provide the amperage that the bike draws, it does not push amperage into the bike....
Last edited by Dan89FLSTC; Sep 8, 2020 at 09:43 AM.
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