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90 cherokee not charging

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Old 11-13-2017, 09:16 PM
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Default 90 cherokee not charging

My son has a 90 jeep Cherokee with new alternator that will not charge unless you run a wire from Battery to one of small wires on back of alternator any ideas what will cause this ? Could it be the ecm ?
Old 11-14-2017, 04:59 AM
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Originally Posted by Bisonwrangler
My son has a 90 jeep Cherokee with new alternator that will not charge unless you run a wire from Battery to one of small wires on back of alternator any ideas what will cause this ? Could it be the ecm ?
This year is not controlled by ecm. Is plug making good contact?

Last edited by freegdr; 11-14-2017 at 05:01 AM.
Old 11-14-2017, 09:17 AM
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Yes the plug is making good contact I also traced the two wires to another plug on firewall by the battery and I cleaned it .
Old 11-14-2017, 10:20 AM
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Did you see this from your other thread?

Originally Posted by Bisonwrangler
My 90 jeep Cherokee has a new alternator but it will not charge unless I run a wire from Battery to one of the small wires on back of alternator any suggestions on what could cause this

Cruiser54,
One of those small wires is a Hot from the ignition switch.
Old 11-14-2017, 12:14 PM
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Originally Posted by EZEARL
Did you see this from your other thread?

Originally Posted by Bisonwrangler
My 90 jeep Cherokee has a new alternator but it will not charge unless I run a wire from Battery to one of the small wires on back of alternator any suggestions on what could cause this

Cruiser54,
One of those small wires is a Hot from the ignition switch.
Lol...

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