Oil Pressure Gage and Sending Unit Revisited

Ok matt this is going to sound crazy but...

Run a jumper from your fuel tank sender to the terminal under the hood for the oil pressure sender, your tank is showing about 1/2 tank, oil pressure gauge should show about the same if he gauge is functioning correctly.

Also unless I did my math wrong you are dissapating about a watt in that 1/4 watt resister.

5 volts / 22 ohms = .23 amps

.23A * 5V = 1.15 watts

Here is what I don't understand...

For the gauge to read high it would need lower numerical restance. Like 10 to 15 ohms.

The only way to lower the resistance value of the sender would be to put some resistance in parallel to the sender, like a partial short to ground.

Parallel restors create a restance lower numerically than the lowest resistor. So if you had a 22 ohm sender and a 50 ohm short to ground your resultant resistance would be in the range of 15 ohms