I understand your solution and will try it.
With regards to the old parts. The ECMs, gauges, etc. They were pulled and tested at the Searay dealer before being replaced.
Without getting into a lot of detail, the repair was covered, so I had minimal out of pocket.
I did see the old parts as and had multiple opinions, to include testing the old parts in a similar boat (they also did not work).
I will try your suggestion with the new parts to see if makes a...
I am new to this site and looking for some advice on a smart craft issue. My 2005 Sundancer has twin 5.0 mercs with bravo III drives/400 hours. Over the summer I started the boat and it was running fine, all gauges working etc. I turned off the boat to get a few items and returned to restart...