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post #1 of (permalink) Old 05-20-2001, 05:33 AM
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Need Schematic for Dual Batteries

Hey Guys
I just finished installing my EFI, "Work's great"
Anyway tryed to do mome winching, the winch takes so much power from the battery that it affects the computer and makes the jeep run like crap. I hope that dual batteries will solve this problem, one to run the jeep & another to run the winch.
Thanks
Mike

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post #2 of (permalink) Old 05-20-2001, 07:41 AM
 
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Re: Need Schematic for Dual Batteries

direct from the man himself:

http://geocities.com/austnjpr/dualbattery.html

Anyone know what happened to TR? What a wealth of knowledge!

Max

82 CJ, some stuff stock, some stuff not
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post #3 of (permalink) Old 05-21-2001, 07:32 AM
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Re: Need Schematic for Dual Batteries

Thanks Max
I have one question about this schematic.?
Do you have to have the override switch on, in order to charge the second battery,& Would I hook up my winch to the second battery.
Thanks
Mike

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post #4 of (permalink) Old 05-21-2001, 08:27 AM
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Re: Need Schematic for Dual Batteries

[img]/wwwthreads_images/icons/smile.gif[/img] The overide switch is so you can "Jump start" yourself if little cousin Leroy plays in your Jeep and leaves the lights on and runs down the cranking battery. The winch hooks to the second battery, and you CAN install a cut-off switch to open the solenoid to isolate the second battery while winching if it seems to affect the compooter. If I wuz you, I would wire up a tricky double-throw switch such that one way is "normal"....second battery charges when oil pressure is up.....and the center is "off".....second battery is isolated......and the other position is "overide" for life's little challenging moments when the cranking battery is on it's butt and you need to "jump start" yourself.[img]/wwwthreads_images/icons/smile.gif[/img] My team of moonguy wiring specialists is ready to fly out on a moment's notice and take on this project. Get the beer chilled and ready..[img]/wwwthreads_images/icons/wink.gif[/img].....a LOT of it.[img]/wwwthreads_images/icons/crazy.gif[/img] TR is busy with yet another business venture, one can only guess what it might be. Every time I look at our special TR-Built DUAL PICKUP distributor I am reminded of just how talented TR is.[img]/wwwthreads_images/icons/tongue.gif[/img]

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post #5 of (permalink) Old 05-21-2001, 04:42 PM
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Re: Need Schematic for Dual Batteries

Thanks Dave
I'am a little confused and a little slow at times, So I wonder if someone could draw this out for me.
Thanks
Mike

post #6 of (permalink) Old 05-21-2001, 06:34 PM
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Re: Need Schematic for Dual Batteries

[img]/wwwthreads_images/icons/blush.gif[/img] I wuz afraid that you'd say that. I have this great big scanner that has never worked worth a crap so I can't do anything but FAX one to you. Some of the other guys may though. As far as the double-throw switch is concerned, I might have to send that particular drawing myself, seein' as how I just dreamed it up on my last post.[img]/wwwthreads_images/icons/blush.gif[/img].[img]/wwwthreads_images/icons/tongue.gif[/img]

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post #7 of (permalink) Old 05-21-2001, 06:44 PM
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Re: Need Schematic for Dual Batteries

Dave,

I actually have the double-throw switch, and it works great (Fell asleep w/ radio on, I guess I am not too old..) The oil pressure switch is a good one too, I just have the switch set to accessory. Additional feature, by isolating the batteries, when wheeling, if you drop a cell in the primary the secondary doesn't drain.

Anyway, Milocks, look at #4 in the diagram. If you have a on-off-on switch installed, it will work like this (according to the diagram).

on (Jump start - batteries are connected, engine running or not) off (Batteries completely isolated, I think what you want) on (Batteries are connected for charging only when oil pressure is up).

Remember a couple of things: 1. Your primary battery will be the one connected to the engine and alternator, it will get recharged. If you run your winch on this one, it will effect the computer. If you run the winch on the second battery, it will drain FAST, without the alternator replenishing it.
2. Never leave the batteries connected for any length of time when the engine is not running. It will destroy your batteries, this is why the solinoid is set up.
Hope this helps...

Scott
'85 CJ7_(0|||0)_T.H.O.R.
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