Oil light intermittent, fades, sometimes steady

Check the connection where the wire plugs onto the sender unit. If it's loose, or the wire shorts out to the body, it might flicker. If this isn't the problem, unscrew the sender unit and check your oil pressure using an oil pressure gauge screwed into the same hole. The pressure should be above 40 psi if my mind serves me correct. If it's too low you'll have to replace or check the oil pump. Did you replace the oil filter and oil recently? If the filter is blocked or the oil is old it might also cause the pressure to drop too low.