Posted By: 340wedge
How to test gauges out of the car? - 12/04/08 02:16 AM
How do you test the oil pressure, water temp, and alt. gauges. I bought a second rallye dash and i want to see if the guages work, and are accurate... 
How to test gauges out of the car?
Posted By: Andrewh
Re: How to test gauges out of the car? - 12/04/08 02:19 AM
wire up 2 aa batteries in series so they give 3 volts.
Then connect them up to the gauage. should put it in the middle.
Gauges get 5 volts. Don't use a car battery or you could smoke them.
Then connect them up to the gauage. should put it in the middle.
Gauges get 5 volts. Don't use a car battery or you could smoke them.
Posted By: 1_WILD_RT
Re: How to test gauges out of the car? - 12/04/08 02:19 AM
Basically you build the whole circut on the bench, then each gauge can be fine tuned with the trim adjustments on the back of the gauge...
10 Ohms = High reading
73 Ohms = Low reading
10 Ohms = High reading
73 Ohms = Low reading
Posted By: 340wedge
Re: How to test gauges out of the car? - 12/04/08 03:25 AM
Basically you build the whole circut on the bench, then each gauge can be fine tuned with the trim adjustments on the back of the gauge...
10 Ohms = High reading
73 Ohms = Low reading
OK I kinda understand with an Ohm meter, but how do i do this and what should the reading be? Are they the same for each type gauge?
10 Ohms = High reading
73 Ohms = Low reading
OK I kinda understand with an Ohm meter, but how do i do this and what should the reading be? Are they the same for each type gauge?
Posted By: 1_WILD_RT
Re: How to test gauges out of the car? - 12/04/08 03:35 AM
Not an Ohm meter resistors to act as the sending unit, Fuel, oil & temp all use the same resistance values for high & low readings... Ammeter doesn't fit this test very well... you can pass current through it & compare the results to a known calibrated gauge...
Posted By: Pool Fixer
Re: How to test gauges out of the car? - 12/04/08 03:52 AM
Posted By: GregGarner