Ja, like Karl says, your pressure sounds fine. The usual function of
the light is to FLASH at low pressure, and above 2000 RPM it flashes
and buzzes. Flickering or steady-on behavior indeed sounds like a
wiring fault.

> Well...the oil pressure is (if I recall) 20 psi at 2000 rpm, and I have a
> new oil pressure sensor - the oil is 15/40 - and the light is brighter
> than it used to be and stays on just the same. Steady at idle, gets dim
> after 3000 rpm...oil looks fine, coolant looks fine, made it into Seattle
> today...
> 
> Andree
>