Bench Testing

12v power source. (Car battery or DC power supply)


3 resisters

1 watt should be enough for short term testing


10 ohm
23 ohm
73 ohm

Some alligator test leads

A multimeter

Watch and understand this video




trace out your circuit board so you know what is what.

any trace that has a screw that goes through it is a ground.

hook up the power source negative to a good ground on the cluster

Most bulbs will need positive to a pin on the cir board to illuminate.