What do the lights on the 1969 vw beetle dashboard mean?

the lights on the dash are as such, the left light is for the low oil pressure, the right light is low generator/alternator. The red light on the dash is for the cylinder head temp. if it exceeds a temp limit, it will light. when driving, or coming off the freeway, the oil pressure light might flicker, due to the change in pressure quickly. The generator light may flicker when 1st started or if the vehicle is ideling lower than required.