2004 Yamaha V Star Classic "fitting oil pressure gauge triumph" Questions

...turn off within a second or two when it starts as the oil pressure rises to normal. try fitting a new pressure sender, or check the actual oil pressure with a gauge screwed into the sender ...

oil gauge with fitting and checking again.oil is flowing nice back into tank ok. Travelled well over 200miles so the bike seams to be riding ok. just this oil warning light. do i check the pump,if not

oil pressure sender switch, if it still comes on, fit a pressure gauge to the oil system(can use the switch hole) although the oil is correct grade, perhaps try one grade thicker, if it really has low