Originally Posted by Diseasel300

The alternator/chassis wire is on the POSITIVE side of the battery, not the negative. The heavy positive cable goes to the starter, the pigtail goes to the 3 post terminal on the false firewall and thus out to the chassis and alternator. Pull up the ETM on Startek and it'll make it clear how the wiring should connect. The fact you have 14.4 on the field wire says the alternator works, power just isn't making the trip to the battery.