Ok lets say the you created a custom made input erased all input for flashes and rotators. The sequence is from 1 to whatever meaning headlights is 1 if you have tail lights that is 2, still researching this, but maybe each headlight represents a single input is 1 and 2 anyways. Its the the pattern what fires off first example sequence 123456 headlight1 then headlight2 tail light and tail light then siren 1 and siren 2, has been working for me so far. to make off a little change the <multiples value="4"/> <multiples value="2"/>
5 and 6 would be siren 1 and siren 2
So easy terms it starts the lights script from 1st input to last
I hope this helps!