i just got two 3"LEDs and it comes with a postive and a negative end. And i have no idea how to hook it up in to my 08 cobalt??

Does anybody know!!??

 

you got me on that one man... we're not that intense here.

 

The positive goes to 12 volts, the negative is grounded to the vehicle. Pretty straight forward to hook up.

 

Run the positive wire to a fuse that is only on when the ignition is on. There's a diagram on the back of the fuse door, which is located in the passenger side wheel well on the side of the center console. Just pull the whole panel on the bottom off. I'd recommend connecting to no more than a 10V fuse just in case something shorts out.

Connect the negative wire SECURELY to any bolt that's connected to the body of the car (IE: metal) to ground it. Connecting it to some bolt on the dash obviously won't work.

Assuming you did it right, you should be in business. Questions/comments, there's that handy dandy PM button.