Temperature Gauge

Disconnect terminal from temperature sending unit on engine. Connect one test lead of suitable tester (C-3826) to terminal and other lead to a good ground. Turn ignition on, turn tester knob to "L" and temperature gauge should show "C" plus or minus 1/8". Turn tester knob to "M", pointer should advance to driving range left of 1/2 position of dial. Turn tester knob to "H", gauge pointer should move to "H" position on dial. If gauge alert system is working properly, light should illuminate with tester knob in "H" position.