battery wiring questions

[jjudge1]

i purchased an older GW which has dual Yamaha HPDI outboards, two start batteries, a house battery, 3 battery switches and a guest charger. The wiring seems a bit messy to me. Does anyone have a wiring diagram that would be well suited for this application?

[Cowboy]

http://www.marinco.com/docs/inst/201001.pdf this gives you the details if you can follow diagrams.

[Cowboy]

Just a word of advise if you are charging two batteries with one of the alternators you need an isolater in between so you don't drain both or overcharge one.

[jjudge1]

i dont believe then outboards have actual alternators. Thanks very much for the info.

[Cowboy]

I think they do

Heres is just one example from Yamaha something has to recharge the battery, sounds like you may want to have a mechanic have a look if your worried.

F90hp F75hp F60hp F50hp F40hp
Engine Type 4 cyl. 4 cyl. 4 cyl. 4 cyl. 3 cyl.

Displacement 97 ci (1596 cc) 97 ci (1596 cc) 60.8 ci (996 cc) 60.8 ci (996 cc) 45.6 ci (747 cc)

RPM Range 5000-6000 5000-6000 5000-6000 5000-6000 5000-6000

Alternator Output @ W.O.T. 25A 25A 17A 17A 15A **

Compression Ratio 9.6:1 9.6:1 9.5:1 9.5:1 9.87:1

Fuel/Induction System DOHC Fuel Injection DOHC Fuel Injection SOHC Fuel Injection SOHC Fuel Injection SOHC

Lubrication Wet Sump Wet Sump Wet Sump Wet Sump Wet Sump

Ignition System TCI Micro Computer TCI Micro Computer TCI Micro Computer TCI Micro Computer CDI Micro Computer

Starting System Electric Electric Electric Electric Manual or Electric

Shaft Length 20 in., 25 in. 20 in. 20 in. 20 in. 20 in.

Gear Ratio 13:30 (2.31) 13:30 (2.31) 13:24 (1.85) 13:24 (1.85) 13:26 (2.00)

C.A.R.B. Rating 3-Star 3-Star 3-Star 3-Star 3-Star

Weight* 369 lb (168 kg) 369 lb (168 kg) 237 lb (108 kg) 237 lb (108 kg) 183 lb (83 kg)

Warranty 3 Year Limited Pleasure Boat - 1 Year Limited Commercial 3 Year Limited Pleasure Boat - 1 Year Limited Commercial 3 Year Limited Pleasure Boat - 1 Year Limited Commercial 3 Year Limited Pleasure Boat - 1 Year Limited Commercial 3 Year Limited Pleasure Boat - 1 Year Limited Commercial



* Weight refers to shortest shaft length available.
** Consult your dealer for optional equipment.

[t bird]

A guy on here helped me out a TREMENDOUS amount!

JAWZ12

Jimmy really knows his stuff !!
In multiple areas of marine service
And can explain it in understandable terms!!

He took time from his WORK(he in the marine business)
to give me FREE advice!!(i really appreciated that)

When this guy gives….TAKE NOTES!!

He suggested these ideas to me(and a lot more!)
1. isolating house/ engine batteries
2. setting up a three switch system like this http://bluesea.com/category/1/products/8280
3. installing ACR one of these
http://bluesea.com/category/2/productline/overview/387
for each engine

THANKS AGAIN JIM!!!

I hope this helps…oh yea…there’s diagrams for this stuff in
West Marines big book

T

[Tristan]

I no longer use a battery isolator. I switched over to a battery integrator. I like it much bettery. No voltage drop.

http://www.newmartelecom.com/Battery...Isolators.html

[Cowboy]

Tristan that looks like a great product, I have a situation that may require me to install one of those for the extra house battery to keep it fully charged without running the generator, it will pay for itself on short trips with the diesel saved not running the genny.
Thanks for the heads-up

[Tristan]

The integrator solved the voltage drop issuue I have always seen on my helm voltmeter with every battery isolator I've ever had. It works great. I put a voltmeter to each of my batteries with the engine running and I can see the charging process working and my voltmeters are up to where they should be.

[Questsportfishing]

the HPDI engines need all the power they can get to start the fuel pumps to fire ... look up BEP battery switches they are simple and it is a very good system that keeps all the batteries in shape without having to flip switches. Boaters world carries them also I believe. Keep it simple!