Wkrma threshold is a variable that you need to make. It will not be in your stock bin. For example the value 3. Then compare wkrma (ram) to this adress (flash) and if wkrma is higher than the variable, you trigger b_mil (bset b_mil). Dont forget to tell the ecu to stop the light when the threshold is not (or no longer) met (bclr b_mil). It can be usefull to study other peoples work, but you still need to understand how the processor works before you can write stuff like this...