Bench Testing a gauge cluster
The simplest way to do what he is asking is to find one of the backlight bulbs and follow the copper tracers to the pin that they get power from.
This is the split style where it has two sets of pins (one left and one right)
Note that 1 2 3 and 4 are the same things, just the others side of the cluster.
1 is the pin that supplies power 12v to 2&3 and 4 is the ground.
The cluster pictured has a backlight pin for each side.
Note in this picture that the pin (number 1) has a green track that goes to two bulbs (number 2 and 3) and that number 4 is the ground for that one bulb (tracks with a screw through them are ground tracks.)
Multiple bulbs that use the same track that is connected to a pin on the back of the cluster are usually backlights.
So in the case of this picture pin 1 is the positive for those two bulbs (2&3)
You can use the cluster housing as a ground, and 12v supplied to pin 1 should light those two bulbs.
Bulbs that use a single track to a single pin and no bulbs are usually gauge connections.
DO NOT supply those with 12v without having a good grasp of what 67Dart273 said above.
Hope this helps
The simplest way to do what he is asking is to find one of the backlight bulbs and follow the copper tracers to the pin that they get power from.
This is the split style where it has two sets of pins (one left and one right)
Note that 1 2 3 and 4 are the same things, just the others side of the cluster.
1 is the pin that supplies power 12v to 2&3 and 4 is the ground.
The cluster pictured has a backlight pin for each side.
Note in this picture that the pin (number 1) has a green track that goes to two bulbs (number 2 and 3) and that number 4 is the ground for that one bulb (tracks with a screw through them are ground tracks.)
Multiple bulbs that use the same track that is connected to a pin on the back of the cluster are usually backlights.
So in the case of this picture pin 1 is the positive for those two bulbs (2&3)
You can use the cluster housing as a ground, and 12v supplied to pin 1 should light those two bulbs.
Bulbs that use a single track to a single pin and no bulbs are usually gauge connections.
DO NOT supply those with 12v without having a good grasp of what 67Dart273 said above.
Hope this helps
