<VV> Oil Pressure sending unit

[Padgett]

>  I have a Stewart Warner 0-80psi oil pressure gauge that was purchased 
> off of eBay for my Corvair engine. Would anyone happen to know what 
> sending unit I should get to get this gauge to work (or have any idea 
> where I can get this info)?

Could just put on an electronic bridge and measure the resistance at 0 and 
80. Take about 10 minutes with a 12v supply, DVM, and a 0-100 ohm variable 
pot (in a pinch, could use a 0-1k pot). Once you know the full scale and 
zero reading resistances, finding a sending unit should be simple.

Or ask SW.

Padgett