Yanmar 1401 light

[professor]

The oil pressure warning light has quit functioning. I checked the bulb and it seemed to be alright. I switched the temp and oil light but still nothing. The fuse is good. Where do I go from here?

 

[LMTC]

Change the sending unit. Check the wire for continuity. In reverse order.

 

[Jackbax]

Quick test, ground the wire from the sending unit to the block with the key on, if the light comes on install new sending unit.

Jack