i think my rubber cover is green, just in case you cant find the "blue" one.

and if theres ever a question of long versus short i just record how many total blinks and look at all the possible ones

its usually easy, liek the time i lost my gas cap

is it 24, is it 33, 42, 51, etc... theyre pretty good about not giving too many different ones for the same addition. and its usually pretty obvious what it is. ive done this in a gas station parking lot, its very easy. you need a paper clip and a screwdriver and the keys to your car.