I have a Volvo 5.0GL in my SeaSport. I replaced the starter and now it just clicks when I hit the key. Batteries are 14 & 15 volts each (new last year 800 starting amps ea.) , all terminals and leads are clean, polished and have corrosion X on them. The wiring is exactly as the Volvo tech manual says. I have installed the starter twice, checked the teeth in the flywheel, ignition switch is new from last year. Same thing, it just clicks. I even added an addition grounding wire.
Stuck. Can't find anything on the internet.