Well, Simba and I have climbed out of the deep hole we were in two months ago. Back then we discovered Simba's hull was pockmarked with corrosion pits and even had some holes. Holes! Unbelievable, but true. The boatyard owner thought it was beyond repair. As I studied the problem and he saw I was not going to kiss my boat goodbye, he switched to telling me about lobster boats he'd seen with bad hulls that had been encapsulated in fiberglass. I dismissed that idea out of hand and hired a welder to close any holes and deep pits, while filling lesser pits myself with an epoxy compound used to repair steel tanks in manufacturing plants.
As a reward for making such a strong recovery, I bought Simba a used bow thruster. Naturally I was going to install it myself. I studied the owner's manual, compared the itemized part list to what I had received from the seller, and ordered any missing parts. That was easy. But the electrical aspects of the installation were formidable. I have never learned much about electricity. Oh, I forced myself to comprehend the wiring diagram of my diesel generator enough to spot a faulty element, but it didn't come easy.
Fortunately, my friend Phillip Landmeier, now down in Guatemala, is a whiz at things electric. He not only reads schematic diagrams, he creates the darn things on a computer! He reworked the original idiotic shore power setup on my boat so that it is now easy to use and never fails. He even designed the electric installation for a large marina (and these are only the things I know about). I asked Phil if he could help me figure out the electric installation for my thruster and he stepped right up to the plate. He created one of those schematics, even specifying what size wire I needed for various segments. He also told me I needed a special relay called a contactor. The area electrical supply house people had heard of them but could not even locate one for me. Phil found it himself, through the internet, down in Texas.
Phil also told me that installing the wiring for this complicated project could be dangerous. He told me of a man he knew who was working with powerful batteries like those I had purchased for the thruster. The man lost a finger when he shorted wires with his wedding ring. Yikes!
So here I am faced with schematics that look like hieroglyphics, gizmos the electrical supply house can't locate, and now physical danger as well! I thought maybe this project was too much for me – that maybe I should bring in a professional electrician to do the actual installation. Then I scolded myself. I forced myself to remember that I didn't know a Bull from a Bear when I decided I would become a stock broker and investment advisor--and that worked out pretty well. I decided I would at least initiate the project, take it on piece by piece. If I hit a wall, I could always stop and call in a pro.
I had read, (probably in one of Phillips informative lengthy emails), that to get maximum power from the batteries, they had to be located close to the thruster and their connecting cables had to be short. So I built a large shelf of strong 2x4's for them, close to the thruster tunnel, which is located deep in the bow. Common sense told me to then box the batteries in so they wouldn't become dangerous missiles when the bow tossed about in heavy seas.
Then I mounted the contactor gizmo on a steel beam right between the batteries and the thruster. I mounted the electronic control box on a piece of plywood at the side of the compartment. I knew I needed to connect the batteries to a charger and first thought I should purchase a charger dedicated to them and place it near the other components. But I realized it would be difficult to monitor charging conditions up there in the bow, under the floor boards, so I ran wires from the batteries back to the engine room where I knew my central charger had an extra port which I could connect to.
Now running cables the length of my boat is an arduous task in itself, pushing and pulling them through holes in bulkheads, removing floor sections, taking beds apart, emptying storeage lockers, and more, in order to access the bilges. So having completed that task, it was almost child's play to run a master control cable from the pilot house console down to the bilge and up to the bow.
Up to now, I obviously did the right thing by winging it on my own. I've found success taking just one step at a time. But now I'm entering new and possibly hazardous territory. I have to measure up, fabricate, and then connect the control wires and thick power cables.
No problema. In preparation, I'm studying the schematics again and even starting to make sense of them. I'll study them some more and if I have doubts, I'll consult with Phil again. I'll stay at this until I get the job done correctly. And I'm confident I'll complete the job in one piece, for I won't be wearing any wedding ring.