Bench Testing a gauge cluster
You have to make it "rigged" to simulate "in car" so use your head.
Apply 12-14V to the ignition connection feeding TO the instrument regulator / limiter.
Each gauges comes out on a pin to each sender. These senders all have the same resistance for the same gauge reading, in other words, "full scale" for temp "hot", fuel "full" and oil (if equipped)
Here's a tester that someone edited to show the resistances
There are a few ways to do this.......(Used to be Radio Shack LOL) Buy the three resistors from someplace, Digikey, Mouser electronics. Or get a big wattage rheostat (variable resistor). If you have a fuel sender that still works, you can move it to whatever resistance you need using your meter and then clip it in to the sender terminal and ground.
You have to make it "rigged" to simulate "in car" so use your head.
Apply 12-14V to the ignition connection feeding TO the instrument regulator / limiter.
Each gauges comes out on a pin to each sender. These senders all have the same resistance for the same gauge reading, in other words, "full scale" for temp "hot", fuel "full" and oil (if equipped)
Here's a tester that someone edited to show the resistances
There are a few ways to do this.......(Used to be Radio Shack LOL) Buy the three resistors from someplace, Digikey, Mouser electronics. Or get a big wattage rheostat (variable resistor). If you have a fuel sender that still works, you can move it to whatever resistance you need using your meter and then clip it in to the sender terminal and ground.
