Bad MPEM 96 Seadoo Challenger

[stevie mac]

Hey all, are there any work-arounds to replacing the entire MPEM? Which component(s) generally blow? And can I order them?

My little sister thought it was ok to jump/charge the boat battery while the car was running. Just trying not to spend $500 on the entire thing.

Thanks!

 

[Ifonecapa]

Not sure but I've seen some videos on Youtube showing this.