Odd happenings with Big Blue.

My Oil light will come on, blinking, while driving on the freeway, road,
idleing etc.  It comes on for 2 seconds and then goes out.  This engine
is tight and runs perfect, i doubt the pressure is low so whats up?
Also the coolant light is weird.  Temp is OK, no light.  I switch on my
headlights and the coolant light starts blinking, it goes away with a
little rev of the engine?

Any ideas?

Thanks
Matt & Nise