Quote Originally Posted by maxpower220 View Post
Based on what you just posted, replace the ignition with a standard key ignition.
I'm pretty sure that's what he has done, but something is goofed up in the wiring from where the prior owner put in the push button start. Who knows what that person did either under the helm or back at the engine?

You might be able to track down the prior owner and get some idea of what they did. Otherwise, I think you're going to need to rip it all out as Jake stated. It's something I might not take on so that's why I suggested taking it to ATL Marine.