I had to replace the ignition switch in my 99 Sea Ray 190BR with a Merc Thunderbolt 5 engine. I changed it out one wire at a time ensuring I connected to the correct SIAB terminals. Now it won’t start, the solenoid just clicks. I changed the solenoid, same click. I changed the ignition module, same click. All gauges and instrument panel stuff works normally, just won’t start. There is a ground wire that was never connected to anything and I can’t find where it would even connect. Could it be that? If not, could it be the engine circuit breaker if it even has one because I can’t locate that either? Thanks for any guidance.

