Thanks! It turned out to be 2 issues (so far). Battery switch was faulty. Replaced. Starter battery is replaced. Everything seems to be in order.
Oh yeah, and I polished the crap out of the cable connectors. Shiny and (like) new!
Just purchased a 2000 Reinell 203 with Volvo 5.0 Penta.
Took it out for first run - great!
Changed stereo with same brand (same harness and connections - stereo change only). Worked great!
Took it out yesterday. Prepping boat and noticed blower did not turn in after turning on battery switch...
