Son's 1990 3.0 Mercruiser has full battery at ignition switch but only getting about 1.4 to the ignition amplifier. Bad connection maybe somewhere? Any suggestions would be greatly appreciated.
Son's 1990 3.0 Mercruiser ran great last year. Went to start up and no spark. Traced back to a box (brain?) disconnected. Tested lead coming from ? still no spark. Any suggestions?