need help identifying part

[Sleepysparks]

Howdy :) I'm needing help figuring out what this part is. I have a 49cc Chinese scooter(139qmb gy6). It's located on the front of the scooter close to the regulator/rectifier. Looks like it's attached to a green and black wire that im assuming is going to ground. It's a metal rectangular piece with a spring inside. My phone's being weird and won't let me attach the pic so I'll upload it from my computer in a minute..

[Sleepysparks]

Here's the picture https://s12.postimg.org/599ru2s3h/Effect_20161101_052119.jpg
..and the other side https://s14.postimg.org/6x1h54lrl/Effect_20161101_052242.jpg
I'm hoping this part has something to do with scooters charging system because my scooter won't start. I did get it started once the other day. I drove it around and for a half hour and it charged the scooter so it would start up every time...but after letting it sit for a few hours it wouldnt start anymore. I'm hoping this part is the problem. Any ideas?

[blueboy5000]

Headlamp ballast.