4WD Indicator Control Unit
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 1994 Mitsubishi Montero, 1993 Mitsubishi Montero, 1993 Dodge Ram 50, 1992 Mitsubishi Pickup, and 1992 Mitsubishi Montero. However, it is still accessible from the selected car via links, so may be relevant.
The 4WD indicator control unit is located behind radio or CD player. Remove 4WD indicator control unit and disconnect harness. Backprobe harness connector and measure voltage between terminal No. 8 (ground) and each respective terminal. Compare test results with chart. See Figure.