old gauges can i use them?

[billy zz]

i found these but i dont know what kind of pickup truck they came out of.
i sure would like to clean em up and use em.
how do i test these?
thank you.
http://i98.photobucket.com/albums/l272/billhedges/zsmithwesson27-2205-1.jpg
http://i98.photobucket.com/albums/l272/billhedges/zsmithwesson27-2207-2.jpg


back of speedo.

http://i98.photobucket.com/albums/l272/billhedges/zsmithwesson27-2-32.jpg

[billy zz]

that govenor thing screws right off and then the back of the speedo looks like any other.

[titus]

you should be able to make em work, itll take a bit of testing and investigation, first you need to find out if they are 6 volt or 12 volt, if they are 6 volt you can get voltage reducers at the auto parts store (ecpensive) or go the the junkyard and get em from the dash panels of 60's ford trucks, they left there gauges 6 volt and just put in reduceres, 2 gauges per reducer.

the volt gauge should just be able to get wired in, all you have to do is run a keyed power wire to it and it will read the voltage from it.

to make the fuel gauge work you need to find out what ohms it designed for, there are 3 different sending units (maybe more) made thru stewart warner that would work, you just need to match the ohms of the guage to the ohms of the sending unit.

the oil psi guage isnt to bad either, is it mechanical or electrical? if its mechanical i shouldnt have to explain that id hope, if its electric you what you would have to do is write down the lowest and highest pressure off the gauge and go to the parts store and look at the oil psi sending units and match the pressures if that makes sense.

the what temp guage is along the lines of the oil psi guage too, usually they have the range the sending unit is designed for in the parts catolog.

but the easeist way would be to find out what the gauges came out of and then go to the junkyard and get the guages from one of those vehicles.

jeff