Step 9: Check the voltage on the 4-pin Molex connector. Touch the black probe to a black wire on the connector and the red probe to a yellow wire on the connector. The voltage should read +12V. Step ...

A voltage drop test is ideal for checking starting or charging circuits to find dirty and corroded connections. High voltage drops indicate high resistance in the wire.

To test this, leave your multimeter on the ohms setting and measure the resistance between the switch pins. On a four-pin relay, these are typically labeled 87 and 30.

Spread the loveA resistor is a passive electronic component that controls the flow of current in a circuit. It has a fixed resistance that limits the current flow and protects other components from ...