The only real time I look at the gauges is in the pits warming up.
My shift light has not been working the last three times out and my shifts have been more constant than with the light.
The bulb is OK, the tach works and the data recorder records the rpm, I have a MSd rpm switch with chick to trigger the light, changed the chip to see if it was bad and it still did not work, I'm thinking the MSD rpm switch is broke.