How to start wiring from scratch?

bprender

Cadet
Joined
Mar 25, 2005
Messages
24
I need to know where I can find information on how to wire a boat from scratch. The cables to the mast lights and stern lights have already been run, but there is no batter, switches, chargers or whatever else is needed. Where can I find information about where to start? Is there a book in America that I can buy and places like Barnes and Nobles? Or is there a website that spells it out for you? Thanks for everyhting.<br /><br />Best - Bryan
 

geersp1962

Cadet
Joined
Mar 30, 2005
Messages
12
Re: How to start wiring from scratch?

This might help. I went to paracay.com and purchased the 12 volt bible for small boats 2nd edition for 16.95
 

vipzach

Lieutenant
Joined
Feb 15, 2005
Messages
1,283
Re: How to start wiring from scratch?

What exactly are you needing to wire? Starter, dash, alt or everything? What kind of boat + year? Older boats don't normally have onboard chargers except the alt, and no battery switch either.
 

18rabbit

Captain
Joined
Nov 14, 2003
Messages
3,202
Re: How to start wiring from scratch?

If there is any one book that covers all of the basics and is easy to read and follow, Ed Sherman’s book is it. See here:<br /><br /> http://www.iboats.com/mall/index.cg...ectric&**********=765522159&*******=395293506 <br /><br />A more detailed reference can be had with something like Nigel Calder’s ‘Boatowner’s Mechanical and Electrical Manual’.<br /><br />Some suggestions:<br /><br />(1) Plan everything on paper before you start.<br /><br />(2) Come back to this forum and ask questions about supplies, products, applications, etc before you make any purchases. There are a lot of folks here that have ‘been there, done that’ and will share their experiences and offer suggestions. Realgun just finished a total rewire of his boat and will probably have some fresh ideas for you.<br /><br />(3) Post pix. We love pix. We crave pix!!!
 

DangerDan

Petty Officer 1st Class
Joined
May 21, 2005
Messages
260
Re: How to start wiring from scratch?

yeah I saw that too.. It does state in the info that information summarised points from Canadian, American and British marine wiring regulations. perhaps this is why.
 

amirm

Petty Officer 2nd Class
Joined
May 7, 2005
Messages
176
Re: How to start wiring from scratch?

On books, B&N unfortunately doesn't have much. But hopefully you have a Boaters World or West Marine next to you. They have a pretty good selection and the titles already mentioned are the ones I recommend. Boater’s world has lower prices btw for the same items.<br /><br />Some things you won't find in the books. Here is a quick list, having done a ton of electrical work on my boat:<br /><br />1. Always buy more than you need. Other than wire, you can return what you can't use assuming you buy it locally. You don't want to keep going back and forth to the store for a different size connector. I find that kits don’t have good quality connectors typically and give you too many of some items, and not enough of the others.<br /><br />2. Buy the best quality material you can. This is the key benefit of doing the work yourself. You save money on the labor, put that in best (marine grade) wires, adhesive lined crimp connectors, proper size wire (or even a bit thicker), etc. You will have a much more reliable boat this way, and less maintenance.<br /><br />3. Get a helping hand. Fishing wires is the biggest pain on larger boats. Having someone at the other end help with the end of the fish line makes the job so much easier.<br /><br />4. Be very, very careful around high-current sources such as the battery. Before connecting anything here, double-check all of your work. And then use an ohm meter to check to make sure you don't have any shorts before connecting the cables to the battery.<br /><br />5. Label all the wires. Most builders skip this step, making troubleshooting so hard next time. Where possible, use different colors and follow current conventions in current marine standards.<br /><br />6. Make sure you understand how to cut holes in fiberglass. Goof-ups here will be costly and negate any savings elsewhere. You could cause serious long term damage to the boat if holes are not sealed properly.<br /><br />7. Don’t wear a watch or other metallic things on your fingers, arm or neck. At a minimum, you would blow fuses, and equipment. At worse, you would get a nasty burn or cause an explosion. A short across high current sources with a wrist watch is a nasty way to regret what you have gotten into. Accidents WILL happen, no matter how careful. Best to minimize chances of getting hurt or damaging something seriously.<br /><br />8. Try to be as neat as possible. By the time you are done, you will have a huge number of wires going everywhere. Nicely bending the wires and fastening them regularly (which is required anyway) will go a long way toward a clean and neat job.<br /><br />9. Finally, know that if you follow these steps and what is in the books, you will wind up with an electrical system that will be superior to 99% of what is installed in boats today! It is amazing how little attention and money is spent on good electrical system in boats. Some of it is horrifying. In my otherwise well built (new) boat, I found that nearly every fuse was rated for 10 amps regardless of what it was protecting! As an electrical engineer, I shutter to think what could be happening to all the other poor people who bought the same boat, and don’t know about the ticking time bomb under them. <br /><br />Hope this helps!<br />Amir
 

Peter J Fraser

Chief Petty Officer
Joined
Jun 22, 2003
Messages
598
Re: How to start wiring from scratch?

If you have to make a new wiring harness from scratch use a trick that a mate of mine uses.<br />He is an Auto Electrian and it is simple.<br /><br />Take a good look at the dash and switch gear and draw a little plan on paper. Do the same for the engine end as well.<br /><br />To make the harness use a single piece of wire and pull it through from the dash to the engine.<br /><br />At each gauge, switch, light etc wrap a strip of masking tape around the wire and MARK the terminal and the length of cable required to reach that point. Repeat this procedure for the other end of each run.<br /><br />When you make the loom stretch out the template and make your new loom along side your template.<br /><br />Real easy when you say it fast.<br /><br />Refer back to the books that others have refered to and make sure you follow the color codes and SWG.<br />Enough has been said in previous posts about crimp vs solder terminals so I wont enter into that debate or I might get flamed.<br /><br />Good luck<br /><br />Peter :)
 
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