Knock guage problem

[jpratt]

This afternoon my caspers knock gauge started acting up. The last red light is dimly lit. No other light is on. I has tried turning off and restarting engine but no change.

 

[HellOnWheels]

This afternoon my caspers knock gauge started acting up. The last red light is dimly lit. No other light is on. I has tried turning off and restarting engine but no change.

....mine too!!??