Lets see somewhere around here we went through this before...
got a candy temp indicator.. that you can get at the supermarket... wives use them all the time.. to make things good and hot... cooked just right.. well your oil is about the same range.. thing.. and guess what its about as accurate... use a electric hot plate and some oil.. and you can check the probes out... yes they are not the same.. as the old ones.. and yes you can see if you can change their range some what by placing longer wire or a resistor in line... but, its best to send the gages out and have them calibrated with the probes... they actually change the internal resistance of the meter movement...
you can also check the gauges by using the candy temp idicator along with hot oil on a hot plate... too... if the probe is reading right.. and yes you can check the resistance by using a DMM (digital Multi meter)... to see what it goes up and down to...
By the way... some say use water... well it boils off into steam at 212... and oil stays around till oh somewhere around 300 degrees... if you used water.. it would have to be the high temp dry type... and that is real hard to find in the supermarkets now adays seeing how the little lady doesn't do steam cleaning anymore at home... smile...
don't get burned though.... as the oil will look a lot cooler than it is.. and don't get any on the hot plate elem either else you will play whodeenie... when it flashes in a ball of fire... and get your hair to change color.. real fast without a dye.... sort of that smoked look... that everyone will notice... smile...
Oh and the regulators are usually on the boards for the inst group.. on the back side... for the new... and I don't think they are adjustable... but, you might look into using a regulator chip for each guage kinda thing... and then you could have a adjustment for each... Just some suggestions to help... GMAs
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