Checking the lamps (Mitsubishi Colt 4)

After removing the lamp, inspect it. If the filament is burnt out or the glass bulb is loose on the base, replace the lamp.

Accurate lamp check: connect the lamp via wires to the battery. Polarity is not important. If the lamp does not light, replace the lamp. Check for corrosion on the wire contacts and on the lamp socket. Clean the contacts.

The test lead must be connected to a reliable ground (bare metal) or to the negative terminal of the battery. Hold the test needle of the test lead (+) on the current-supplying contact of the connector or pierce the current-supplying wire with it. If at this time the test lead lights up, but the lamp does not light, then there is a break in the ground wire of the lamp. To check this, connect the ground with an auxiliary wire to the lamp socket. The lamp should light up.

Lamps that only have current-carrying wiring are connected to the vehicle ground directly through their housing.

If there is no voltage in the lamp's supply wire (the tester does not light up), the switch may be faulty. Check the switch.

The original article is on the website MitsubishiMan.ru