Have replace alternator and computer- still low voltage on 1997 Jeep Grand Cherokee

The alternator has been replaced as well as the computer. the battery is good. still low voltage - any suggestions

Asked by for the 1997 Jeep Grand Cherokee
before you replaced alt and computer, did you check the voltages at the alt to insure it has the necessary power?

Did not check before replaced alternator because vehicle kept running off battery.