I have two original 120 degree faces with black backgrounds and white letter, one is a oil pressure from zero to eighty lbs. and the other is water temperature from 100 to 280 F I called and ask the Sun Pro tech. to see if they where the same company and the tech said in a roundabout way that Sun had been part of the company at one time a long time ago before Snap On bought Sun instruments and then sold them off to Bosch He gave me several of the Sun Pro senders part numbers and the ohm readings of them to see if they would work with thier gauges now. I have a bunch of older electrical sending units but none of the ones I have now read the way he says they should at zero pressure or room temperture, between 70 and 80 F I would like to use them in my 1966 Dodge Coronet Deluxe street car I'm building to make it look like they did when I was getting started in hot rodding a long time ago in the mid 1960sThanks in advance

Cab I had some old ones I bought in 68 69.The oil was mechqanical but the temp was electic.When the key was on it jumped up to the lowest temp on the gauge.Then as the car warmed it showed the temp.My sender was NOS I bought in like 72 and never used but for maybe a week.Sold them on Ebay for almost 300 bucks as the correct senders are rare and mine was almost brand new.Rocky