The oil pressure sending unit is mounted to the oil filter housing on the back of the engine. If you look up from under the car at where the oil filter is there is a wire connector that attaches to a piece on the side of where you screw the filter on. That is the oil pressure sending unit.
Your fuel sending unit is in the gas tank, mounted from the top.
It is usually on the top of the fuel tank, or close to it.
To the right of the Coolant temperature sensor. It has 1 wire connector
Bad connection at wireing connector at the oil sending unit. Bad sending unit. Replace as needed.
Any fuel sending unit I've ever seen is mounted into the fuel tank.
Yes, It is mounted on the fuel sending unit inside of the fuel tank.
It is mounted on the fuel sending unit that is INSIDE of the fuel tank.
Mounted next to the oil filter.
Mounted on top and inside the fuel tank.
temperature guage sending unit
May be mounted to or above oil filter