So what was the root problem?
It basically was the other shops fault when they wired my trolling motor system up. Apparently (from what this technician said) is they kind of went with the easiest way to attach the power and ground lines over the right way. Cables started corroding and the there was intermittent slight power losses. Not total power loss, but would drop to 6 volts and these Mercs need at least 8+ to run properly because of the onboard computer and just being a highly electronic motor. He went in and replaced all of the wires and properly sealed them so they won't corrode or loosen up.
The trolling motor plug, I did before I went in for surgery. He told me it was working perfectly, but when It didn't work when I got home, I took a phone pic since I couldn't see it and it was all corroded completely off. How can it be working properly and tested, when the wires weren't even connected?
Third one was my bilge pump wasn't working. He said it was working fine and didn't know why it wasn't pumping water. The new shop said that wasn't even my bilge pump and just a livewell pump which the tech should have known. In order to get to the bilge pump since it was in a terrible area, they installed a new hatch and put in a top of the line automatic RULE pump instead of the dead one which was a cheap unit.
At least she's ready to go now! How's your boat, Jim? I haven't seen any updates in a while.