I have located the ECU under the dask but I do not see any lights or LEDs that flash. Where is the lights located? Is it next to the turn screw where you set the mode?

Had the same issus at first with mine till I realized my check engine light was flashing the codes for me. It will flash each code once the start the cycle over again. examples of the codes are as follow
3 long flashes and 4 short flashes is 0304,
10 long and 5 short is 1005

It hard to see the dash light flashing when your head is jammed between the peddles.
Thanks again