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<blockquote data-quote="ThxOne" data-source="post: 8664704" data-attributes="member: 675210"><p>Between certain years, Chrysler was nice enough to put the alternators voltage regulator in the vehicles computer. This made things for those of us wanting to do stereo's not so good. Blow the regulator, replace the whole ECU. I am running a re-manufactured 120a alternator (90a factory on my 4.0L straight 6) and I am running a single 10 on a RF - Prime 1200-D and Components up front, coaxials in the rear doors off a 4 channel U.S. Acoustics amp. I don't have any dips in voltage unless my ground loosens up now on my battery. I have the Big 4 in 1/0 cables and 1/0 running to the back with 1/0 grounds.</p><p></p><p>I did some trial and error with alternators and even bypassed the voltage regulator in the ECU with a kit I got online so I could use my own adjustable voltage regulator.... All of it was a pain in the ass. Best bet with the Alternator route, in my opinion, is grab a factory one from a 1998 Jeep Grand Cherokee 5.9L Limited (136a) and swap the 7 groove pulley with the 6 groove if you have the straight 6. Or if you want the easiest way to handle it... run a second battery in the back.</p></blockquote><p></p>
[QUOTE="ThxOne, post: 8664704, member: 675210"] Between certain years, Chrysler was nice enough to put the alternators voltage regulator in the vehicles computer. This made things for those of us wanting to do stereo's not so good. Blow the regulator, replace the whole ECU. I am running a re-manufactured 120a alternator (90a factory on my 4.0L straight 6) and I am running a single 10 on a RF - Prime 1200-D and Components up front, coaxials in the rear doors off a 4 channel U.S. Acoustics amp. I don't have any dips in voltage unless my ground loosens up now on my battery. I have the Big 4 in 1/0 cables and 1/0 running to the back with 1/0 grounds. I did some trial and error with alternators and even bypassed the voltage regulator in the ECU with a kit I got online so I could use my own adjustable voltage regulator.... All of it was a pain in the ass. Best bet with the Alternator route, in my opinion, is grab a factory one from a 1998 Jeep Grand Cherokee 5.9L Limited (136a) and swap the 7 groove pulley with the 6 groove if you have the straight 6. Or if you want the easiest way to handle it... run a second battery in the back. [/QUOTE]
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