Oil pressure switch and sensor HELP!!

[duece1951]

Why does my 1984 c15 have a oil pressure switch and and oil pressure sending unit? The one down by the oil filter is hooked up and the one behind the distributor is not hooked up, broken wire. Can’t find the tan wire that it came detached from. Oil pressure gauge reads 60 psi in the truck or not. Power on off. Does not matter. Is it possible that someone could not get the manifold one off and put the other in and that is why the gauge does not work? Fresh oil and is at correct level. I am at a loss and any help would be great. First square body.

 

[duece1951]

Also when I test the contacts in the dash the gauge goes into I get no power period.

 

[Ricko1966]

One is for the gauge 1 powers the choke.op controlled so choke doesn't have power unless the engine is running

 

[duece1951]

One is for the gauge 1 powers the choke.op controlled so choke doesn't have power unless the engine is running

Thank you!