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 Post subject: high output alternator
PostPosted: Sun Mar 27, 2011 11:37 am 
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Joined: Sun Mar 27, 2011 11:34 am
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I just bought an alternator out of a 97 Grand Cherokee. It fits my 95 YJ and puts out 136amps. Most of the information I've found says I need to also change the wire size for the wire that goes from the alternator to the battery. There isn't 'one' wire. Can any one please tell me exactly which wires I need to change. I think I'll up the wire size to a 1 or 2 gauge. Thanks.


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 Post subject: Re: high output alternator
PostPosted: Sun Apr 03, 2011 7:55 pm 
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Location: Jacksonville, FL
kayaker69 wrote:
I just bought an alternator out of a 97 Grand Cherokee. It fits my 95 YJ and puts out 136amps. Most of the information I've found says I need to also change the wire size for the wire that goes from the alternator to the battery. There isn't 'one' wire. Can any one please tell me exactly which wires I need to change. I think I'll up the wire size to a 1 or 2 gauge. Thanks.


I have a YJ wiring diagram from the FSM in the link in my sig. Pull it up and find your year, it will show you where each lead goes to.

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'12 JK

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 Post subject: Re: high output alternator
PostPosted: Sat Sep 03, 2011 8:11 pm 
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Joined: Sat May 30, 2009 11:32 am
Posts: 117
Location: Washtenaw county
http://www.the12volt.com/installbay/for ... 73496~PN~1

Upgrading "the big 3", the link is from an audio site but same concept for running lights, winches, air compressors that jeeps run.

Upgraded my big 3 after putting in high output alternator from a Durango. Blew my alternator pulling a buried 8600lbs f350 superdiesel on 37's. Superwinch still pulling strong:))

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06 CRD/samco's/GDE eco tune/fumoto/toyo H/T /brake controller/tow package

04 TJ/3" OME/1" MML/1"BBL/3/4" coil spacers up front/discos/Extended bump stops/adj. Rear track bar/hi-lift/ 33x10.5x15 toyo MT on steelies/Epi9000superwinch/nates front bumper/extended breathers/160amp alternator


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