So every time i try to scale my Liberty light bar the different components scale on different a different axis's and i cant find out how to make them scale on the axis so they scale together. its hard to explain but the different parts of the bars such as the glass, the els extras and other stuff break apart when i scale it and don't scale evenly.      

Select all, enter selected mode and go into polygonal mode. Then hold shift while scaling. 

How do you enter polygonal mode?

You click on the third box from the left (by default it should be set to furthest block on the right, the red and white one).

if i enable polygon mode then it wont scale the object. The picture shows what happens when i try to scale it normally.   

You need to select it first, enter polygonal mode (with selected mode turned on), select it for a second time and then scale. 

Just enable Base to pivot in the Scale sub-menu (little box close to it) AND don't forget to hold Shift while scaling, this way it keeps all the proportions of the model.

Just enable Base to pivot in the Scale sub-menu (little box close to it) AND don't forget to hold Shift while scaling, this way it keeps all the proportions of the model.

 

 

You need to select it first, enter polygonal mode (with selected mode turned on), select it for a second time and then scale. 

 

Well i tried both those and it still did the same thing, with polygonal mode on it still didn't scale and if i turn base pivot on it still scaled like in the picture above. Its really starting to irritate me... i just wanna finish my Charger

What I usually do is select quad highlight the entire lightbar (Including L1's etc.) then select Scale and Hold the left shift key and click and hold and drag the mouse.