AMS LED Light Bar v3

Changes to the original model: 1) I used PETG for the filament, 2) I fixed the uneven negative parts that made the groves for the lightbar and center connector, 3) I added a dovetail joint to join the lightbar halves together, 4) added locking ball joints to the center locking bracket and to the vertical end parts to hold everything in place without glue, but one could glue the joints as well. Changes from V2 to V3: 1) doubled locking balls on the vertical supports, 2) reinforced the center connector for strength, 3) changed the locking joins from male to female on the center connector, 4) extended the edges of the center connector to be flush with the lightbar when the bar is in place, 5) and on the lightbar the locking ball joint for the center connector interface from female to male. These changes have improved the models structure rigidity after assembly. (Please note: The vertical supports are the same so they can work on either end. Also, the parts are delicate, so be careful whe