Re: 18 volts at the battery (again)!!!!
first time to check is the gage a bad gage will cause this problem seeing that the gage tells the voltage reg what to do. if u undid the jumper down at the external reg then u unhooked gage from the new reg so that should leave the gage out(ie mean the gage isn't the problem. i'd pull the alternator and take it to a parts house and have it tested just o make sure u didn't get a bad one
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