Need some assistance with my Speedometer project

[JohnRob]

@ben010203

 count = TCNT1; //Store TCNT1 in variable
  delay(1000); //Delay to count pulses

I would reset TCNT1 t0 0 after every read. Then drop the pcount.

What do you know about the Vss signal. You could use a timer to count the period of each cycle.