sorry about that, it's the starter relay. It has 4 prongs on it. one blue coming from the battery, one blue going to the starter (which stays hot all the time when the relay is plugged in), one red/white coming from the start button, red wire which makes all the lights hot. This scooter has been sitting for 5 years. when the bike was giving to me it only had the back side of the key switch which the owner were using a screw driver to start it. I replaced the battery and key switch and now I don't get any sound that and power is going to the starter when I press the start button. I replaced the starter relay thinking it might be that. When plugging the starter relay in I have click click sounds coming from it. Plugged in, I took a 12 volt tester and without press any starter button my blue wire going to the 12 volt starter is hot all the time. So I have check all electrical wiring, nothing is broken. So, now I'm at a lost what to check next. Thanks, hope this helps some with my starter relay problem.