So I went the the JY and pulled an alt off a dodge durango 5.9L. Its not the 160a, its a 136a. At the time I wasn't aware they put bosch alts on the durangos and I thought it would be an plug and play swap going into my 91 cherokee. Now looking at it. It is a bosch 136a all in good condition and magnetizes with current applied to the regulator. Its still the same bolt hole mounting pattern/case so it should mount with the normal clearancing of the brackets. Id like to use this alt for my jeep but have a few questions. I know the output post goes to battery and is fused. My questions is the wiring of the regulator which is 2 terminals in the connector. Can I just wire this straight to the jeeps existing harness? I believe from my research it is externally regulated by the computer. Also does polarity matter at the regulator? Any electronic wizards out there to help point me in the right direction? I've attached photos of the alt pigtail leads for reference. Has anyone out there swapped a bosch alt in? I've always likes bosch products and hope it is compatible in some way.

 

Anyone? Still at a loss if I can directly wire the white/blue with and green wire directly to the xj existing harness or will it be more trouble then it is worth? Looking to get this on the jeep this week while the new engine is out before dropping it in.

 

Well after a lot of research it seem the alternator wireing will work. I found a good video on YouTube after watching about 20 where the guys swap a nippo in with the same wiring plug. So i went to the bench with the grinder and started clearancing for the bosch. Well...the bosch case is about a 1/2 in larger then the 160a dodge alts and id have to grind clear down into the two mounting bolt holes on the timing chain cover. So it doesn't look like its gonna work even if I try to grind the alt case as well, just not enough room. So I ponied up and bought a reman from autozone thats a nippodenso 160a and the bosch pig tail connector fits and the clearancing ibhad done for the bosch was sufficient for the nippo. Took it apart today and painted it burnt copper to match the jeep exterior! Figured I'd post what I learned to maybe save some others the hassle.



follow the build on IG @penny_the_xj

 

I have a 2017 Savana with the processing plant variable voltage charging framework running on a 105 amp alternator. Can I simply trade in a higher limit GM alternator or does the ECM/BCM should be modified for it? Neighborhood seller says you can trade in a bigger yet can't go littler. Anybody have any certifiable involvement in this? I need to interface a house battery charger that can top at 50 amps to the house battery and am careful about the 105 amp alternator having the option to flexibly that much current. The current required by the house battery would drop before long however I'd prefer to have somewhat more overhead on the flexibly side, presumably go to a 150 amp alternator. Much obliged
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