RESTO No spark

[partfish]

Hey guys, so I took my 2 sea doos out for water tests for the first time. My 1996 xp800 ran great but my 1996 gtx lost spark after I ran it a few short times. It lost spark when I while I was running it at the rev limit for about 10 seconds. Everything seems to be fine besides no spark. I checked and cleaned up the
small ground wire to the rear box.

 

[tobytd]

Check trigger coil some early models like to break off of mounting plate

 

[IDoSeaDoo]

If you've ever had water in your electrical box, the ground on the coil can corrode. I got a good ski cheap beause of this once. Does it beep twice when you put the key on it still?