89 xj, don't know what alternator I took out and want to make sure the wiring is good for the 100 amp I just bought. Are these jeeps prewired to handle all alternator options?

 

Nope. Not at all.

The wiring is the biggest issue, not the alternators.

www.kelleyswip.com


Click on the pink link below and do Tip 1 also.

 

What all should be upgraded for a 100 amp alternator then? Just a bigger charge wire? Any other wires or fuses?

 

Did you visit the link I posted?

 

Just did, I see you offer huge welding cables for jeeps but that seems like overkill for what I'm doing.

 

It is an overkill.


I suggest going to 6 AWG cables (at minimum) or to 4AWG (maximum).


Edit: Here's some reading for you. https://www.cherokeeforum.com/f2/rep...y-tips-222020/

 

That's what I was thinking, what wires specifically? And what about fuses?

 

The power cables (B+) and the ground cables. Fuses remain the same.

 

Does the alternator charge cable have a fusible link? I see a section on it that's got heat shrink.

 

Not sure what an '89 has.


Unwrap it and see what it looks like. Take a pic if you can.

 

Here's some pics of battery connector crimping.


https://www.cherokeeforum.com/g/album/5144236


Pass your cursor over the pic to see the text then click the pic to enlarge.


I use these brass battery connectors from O'Reilly - work great.


You'll need 5/16" stud size ring terminals/lugs.

 

That's not my website......