recently change both alternators and batteries
but still shows that lower alternator is in fault
i have the edge programmer installed and the code reader is what it shows (code p-1106)
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you need to check power and grounds to both alternators. also, it would be a good idea to remove them both and have them bench tested to make sure you do not have a defective unit
Roy
when i remove the connector from either one of them the voltage keeps the same