TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 139 of 1205
REFERENCE INFORMATION With engine off, turn switch. If the voltmeter is slightly in the yellow zone, you can continue down the YES path, but beware of possible test tailures due to the low battery charge. TM 9-2320-387-24-l ELECTRICAL 2-79