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Hey, no problem man..I was just glad that they are still functioning properly per your advice. I see what you mean about the batteries being directly proportional to the energy balance of the alternators output because the alternator was reading a higher output with each time I ran the truck and...

So, I finally got a chance to go run the truck on two different days this weekfor about 20 mins each time. First day I was reading 24.8V resting and on the second I went back they were reading 25.6V and I ran it another 20 mins and when I turned the truck off they were resting at 26.2V?? I was...

Ok will do. It may not be until the weekend that i can get back to the truck, but I will report back and thanks.

Ok, so here were the readings at the battery terminals(not converter in truck). 24.6V with truck off. 24.7V @650rpm(idle) 25.4V@950rpm 27.2V@1250rpm Interesting that it's not really any different running at idle then turned off I thought. What do these readings tell you overall though?

I wasnt aware that the batteries could be that low, so Im going to check the readings at the individual battery terminals with truck not running tonight. The readings I got were inside of the truck at the 24 to 12V Converter output terminals...so will get back with you tomorrow. Also, I have let...

hey Clint, The batteries were newly installed the same time as the alternator from NAPA..so no issue there. Everyone is telling me its simply a pulley issue with regards to the voltage output readings. Voltage readings at my 24 to 12V converter terminals were...... 23.6V@low idle/600RPM...

So, I purchased an 100amp Delco alternator from 74M35A2 almost two years ago and only got it put on about a year ago. Of course it has to be idled at 1200rpm to produce what it should at 750rpm and I havent used the truck hardly at all this year and now is the time to confront this issue before...