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General Forums => The Mess Hall => Topic started by: Desertrat94 on February 24, 2017, 08:26:24 PM

Title: 90A to 117A
Post by: Desertrat94 on February 24, 2017, 08:26:24 PM
So I'm looking to swap in a 117A alternator into my 94 yj. So I need to do anything with the wiring?
Title: Re: 90A to 117A
Post by: bootguy on February 24, 2017, 11:45:49 PM
If money is not an issue look at this.

http://shop.mean-green.com/1998-91-25L-150-MG1334-D.htm
Title: Re: 90A to 117A
Post by: Desertrat94 on February 24, 2017, 11:49:47 PM
I don't really need that many amps. I just need to keep up with my winch when I use it.
Title: Re: 90A to 117A
Post by: Jeffy on February 25, 2017, 01:27:20 PM
What Jeep do you have?  If it's a YJ then you'll probably want to run another line from the alternator to the battery.  The stock line is rated at 100a (two 50a fuses in the PDC).  Although, that's at full draw and at high RPM.  So yes, you could run it without upgrading in a pinch.  You'll want to look at the load range of the wire gauge to figure out what you need.  A 10 gauge wire would work but if you're going to do it you might want to consider something like a 8-4 gauge.  Then fuse that or use a circuit breaker.
Title: Re: 90A to 117A
Post by: Desertrat94 on February 25, 2017, 01:32:49 PM
Would I run the new wire straight to the battery or would I replace the factory one and replace both fuses with bigger ones?
Title: Re: 90A to 117A
Post by: Jeffy on February 25, 2017, 01:36:27 PM
Would I run the new wire straight to the battery or would I replace the factory one and replace both fuses with bigger ones?
I'd run a new line to the battery.  Like I said the PDC is limited to 50a.  Unless you want to be upgrading the wiring inside the box, you're better off just running a new line.  If you go with a 8-4 gauge, you wouldn't have room in the box anyway.
Title: Re: 90A to 117A
Post by: Desertrat94 on February 25, 2017, 01:38:53 PM
Ok cool. Thanks. That's my project for tomorrow.