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Please explain wiring diagram for me

Old 04-08-2003, 07:51 AM
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Default Please explain wiring diagram for me

..ur diagram makes sense: it switches the batteries!! my dealer has made the setup so the switch changes the load(i e the engine starter:1, 2, or both) and has not included the parallel cable on the battery negative posts as ur diagram shows.. so because of no common ground(other then that made by steering linkage)i can start engine 1 on battery position 1 and only get low voltage sound when i try to start engine 2 from battery 1... and vice versa!! ..under my circumstances now thats probably a good thing because..

if i add the cable between battery negatives i wud have a solid common ground and be in parallel ALL the time.. charge from both engines wud be going somewhere undistrubuted..? .. what futher concerns me is the plauque that Mumblerone pictured "..never run engines with switch in parallel as damage.."

..as for my current situation, the path of least resistence for each engine charge is thru the direct connection of negative sides of batteries to respective engine.. as the steering linkage is a poor common between engines, i see charge from each engine going into the respective battery thats connected with the better ground.. thats good..for the moment at least i wud be safe, do no damage? Right! ..say its so..!!
..i'll get what i need, add a house battery and another switch redoing the whole thing switching batteries and not loads and hire a miget to do the work!! ..oh well, bummer!!
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Old 04-08-2003, 08:52 AM
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Default Please explain wiring diagram for me

Bummer12 - I just reread your original post and I stand corrected . . . your set-up stinks!

Mumbler - That diagram I posted allows exactly the same hook-ups as your two switch set-up (both on 1, both on 2, both on both). The only thing it won't do is: (1 on 1, 2 on 2).

Sea-Dad - Please provide an article or some other evidence that voltage regulators will be damaged by having alternator ouputs coupled together on one battery. If that is true then I'm going to get into the voltage regulator business.

28' Maxcat w/twin Honda 225's
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Old 04-08-2003, 10:59 AM
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Default Please explain wiring diagram for me

Chaps, have a look at the picture Mumblerone posted of his switch panel. Read the message in the middle of his panel carefully.

Let us know how the regulator business works out.
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Old 04-08-2003, 11:00 AM
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Default Please explain wiring diagram for me

Chaps... take a look at the Guest site I referenced on Page 1; it eludes to regulators, etc... Tell us what you think. Just curious. Thanks

Boston Whaler, "MUMBLER", 24' Outrage, twin 175 HP Evinrude Ocean Pros. Snowball, the cat...
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Old 04-08-2003, 11:04 AM
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Default Please explain wiring diagram for me

quote: hire a miget to do the work

No kidding, let me know when you're done with him, I need to foam the gunnels in mine.
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Old 04-08-2003, 05:06 PM
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Default Please explain wiring diagram for me

HOOYAH! the orders are rolling in! . . . best business decision I ever made in my life! All those guys that have been running around for years with their batteries in parallel are calling and ordering regulators by the case!! Wow . . . thanks guys!

28' Maxcat w/twin Honda 225's
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Old 04-08-2003, 06:37 PM
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Default Please explain wiring diagram for me

Now Chaps... try to get hold of yourself; just remember who to split those profits with!

Boston Whaler, "MUMBLER", 24' Outrage, twin 175 HP Evinrude Ocean Pros. Snowball, the cat...
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Old 04-08-2003, 08:02 PM
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Default Please explain wiring diagram for me

Okay,I'm wiring two switches as per the Perko diagram #2.

Bilge pump one wired directly to port battery and bilge pump two is wired directly to starboard battery.

The diagram shows the negative sides of each battery wired together and to "the engine ground." Does this mean each battery is connected to their respective motor's negative wire AND to eacn other?

Also, what lugs on which switch do I connect the boats (+) and (-) wires to so I can provide power to the electronics, lights, etc....?

Thanks,
Scott K.
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Old 04-08-2003, 09:15 PM
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Default Please explain wiring diagram for me

Ok I'm gonna throw a kink in to this. I wanna hookup 3 bateries to 2 engines and use the thrid batery for just the house but have both engins charge house batery. See diagram #3 will this work out and what would be my switch selection while both moters are running.. Take That


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Old 04-08-2003, 09:18 PM
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Default Please explain wiring diagram for me

Special-K

You have stumbled upon the real problem with the Perko wiring scheme, it does not properly address the "house" requirements. Yes, where should you hook up the lead for your accessories? Good question and I suppose you have to choose either 1 or 2 on one of the switches and then you have to decide how to manage the switches for starting, cruising and drifting. Wonderful, ain't it?

On the ground leads, yes, all negative posts on batteries and engines and accessory panels need to tie together.

28' Maxcat w/twin Honda 225's
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Old 04-08-2003, 09:55 PM
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Default Please explain wiring diagram for me

Inthepocket

I can't believe these Perko diagrams! Its a conspiracy! They know that people want to buy 1-2-Both switches so they come up with crazy schemes to make them work! This is driving me craaaazzzy! OK . . . settle down . . . I can do this . . . relax, take it slow . . .

Ok, in this one you'll want to start the engines with both switches on 1 then if you want the house battery to charge while you are running then switch them both to 2 or both to Both or just one of them to 2 or to Both or . . . ? Ok, after you decide that then be sure that when you are drifting or anchored (engines not running, stuff turned on) then switch both of them to 2 so you don't run down your starting batteries.

Someday boaters will see the benefit of simple off/on switches . . . please god let it be soon

28' Maxcat w/twin Honda 225's
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Old 04-08-2003, 10:20 PM
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Default Please explain wiring diagram for me

Ok here we go. Is it safe to run port and star switches in the both postion. This means that both engines would be chargeing their respective batery and the house simultaneously. Or should both engines be started at the 1 postion and after the engines are started to set one of the switches to both or 2 postion. This means that 1 switch would be chargeing its respective batery and the other would be chargeing the respective batery and the house batery. LOL uh huh take that..


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Old 04-09-2003, 01:04 AM
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Default Please explain wiring diagram for me

. . .Safe? It's all safe unless you think that you might fry a voltage regulator!

Yeah, unless you want to start your engines off of the house battery you need to start both of them on 1. After they are running switch them both to Both to charge everything. When drifting turn them both back to 1 (forget what I said above) This is assuming your house panel lead is connected to a #2 switch terminal or the positive post on the house battery.

It's a messed up system 'cause you have to keep remembering to throw switches to be sure you don't end up with dead start batteries.

28' Maxcat w/twin Honda 225's
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Old 04-09-2003, 02:27 AM
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Default Please explain wiring diagram for me

OK - You want something simple & foolproof? Easy to understand, accessories will never run down the starting batteries, everything charges automatically even if only one engine is running, batteries get a full charge, etc.



Get on the boat, flip 3 switches to "on"
Get off the boat, flip three switches to "off"

28' Maxcat w/twin Honda 225's
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Old 04-09-2003, 06:17 AM
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Default Please explain wiring diagram for me

OK you guys are really starting to hallucinate now.

Stop with the tying of regulator outputs together already. It's not a wise thing to do at all, you run the risk of causing a fire on your boat.
If you want to charge a single battery or bank of batteries with both motors at the same time then use an Isolator. That's what they're made for.



Scott,
-----------------
The diagram shows the negative sides of each battery wired together and to "the engine ground." Does this mean each battery is connected to their respective motor's negative wire AND to eacn other?
-----------------
Yes, you need to tie both/all batteries together on the neagtive leads, and you must use the same gauge wire as the cranking cables. If you used 4 guage wire for the starters you need to use 4 guage (or bigger) wire for the tying together of the batteries.


-----------------
Also, what lugs on which switch do I connect the boats (+) and (-) wires to so I can provide power to the electronics, lights, etc....?
-----------------
Most upper crust boats (like Mumblerone's ) have a panel to distribute power to the boats electrical loads. To do it right, you need to leave the bilge pumps, any fire detection, and gas fumes sniffers (stuff like that), wired up directly to the batteries. The rest of the boat needs to be switched.

The easiest way is to mount bus bars by the switches and run the loads off of the bus bars, with just a single wire running from the switches to the bus bars.
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Old 04-09-2003, 06:47 AM
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We ALL win! THE END

Boston Whaler, "MUMBLER", 24' Outrage, twin 175 HP Evinrude Ocean Pros. Snowball, the cat...
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Old 04-09-2003, 10:25 AM
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Default Please explain wiring diagram for me

Sea_Dad

I have a Pursuit , it has panels. I am not sure which lugs and on which switch, I connect the (+) and (-) leads that run from the battery switches to the fuse blocks that give power to the elkectronics.

-Scott K.
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Old 04-09-2003, 02:53 PM
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Default Please explain wiring diagram for me

Scott, get in touch with pursuit, and see if they will supply you with a wiring diagram for the panels.

You always fuse the + side of the circuit before it goes to the load. So the output of the switch that goes to the motor also goes to the main + lug for the fuse block. Which switch to choose from to power the panels is your choice, just dont pick both, unless you have an Isolator. And ummmm since you can afford a pursuit you must keep up appearances and are therefore required to purchase an Isolator. It's a much better solution anyhow.

Depending on the panel, it may or may not have a bus bar for tying all the - leads from the loads together. This one you just run to the battery - post.
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Old 04-09-2003, 04:38 PM
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Default Please explain wiring diagram for me

Oh yeah, by the regs. You should be fusing the main feed from the battery switch to the panels with a main fuse or breaker. Assuming it's a longer run than a foot or so.
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Old 04-09-2003, 04:57 PM
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Default Please explain wiring diagram for me

Sea_Dad-

Thanks for your help! I am very grateful to those who help me. It's a 1990 Pursuit 2550 Walk Around. I just purchased it one month ago.

It's been professionally re-wired once (about 5 years ago). I do not like the battery set-up; the surveyor said this is the only thing he disliked about the boat.

Just to recap, to make sure I've got it correct before I re-wire this week-end (weather permitting).................................

I will re-wire as per the Perko diagram #2.

(1)In addition to tying the (-) terminals of
each battery together, each (-) terminal will be wired back to the respective motor too.

(2) The (+) wire supplying the electical system it's power will come off the "COM" lug of the starboard switch. The (-) wire returning from the electical system will go to the (-) terminal on the starboard battery.

(3) Just after the starboard switch there will be a maxi fuse (40A) inline on the the (+) wire supplying the electical system it's power that is coming off the "COM" lug of the starboard switch.

Do I have it right?

Thanks,
Scott K.
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