1996 Ford Thunderbird Owner's Manual - Page 72

Battery Voltage Gauge (If Equipped) This gauge shows you the battery voltage when the ignition key is in the ON position. If the battery is operating under cold weather conditions, the pointer may indicate in the upper range of the NORMAL band while the battery is charging. If you are running electrical accessories (when the engine is off, or idling at a low speed), the pointer may move toward the lower end of the NORMAL band. If it stays outside the NORMAL band, have your vehicle's electrical system checked as soon as it is safely possible. Battery voltage gauge Engine Oil Pressure Gauge This gauge indicates the engine oil pressure, not the oil level. However, if your engine's oil level is low, it could affect the oil pressure. With the engine running, the pointer should move into the NORMAL band. If the pointer drops below the NORMAL band while the engine is running, you have lost oil pressure and continued operation will cause severe engine damage. 69