Using a nail or other sharp object, make 10 dots on the larger project box in the shape of left and right arrows (5 LEDs per arrow). Be sue they are spaced apart enough so that the LED holders won't touch. Drill the holes and place LED holders and LEDs in. Turn the LEDs so that all the positive leads are facing the same way and the negative leads are facing the same way. If needed, use hot glue or super glue to secure the LEDs in. Bend all the + leads of the LEDs. Connect all the positive leads of the LEDs of one arrow with wire. Leave a little peice of wire sticking out of the bottom LED. Repeat for the next arrow. Now use this same method to connect all the negative leads of one arrow, and then the other. Solder them to ensure a good connection. Now you need to drill a small hole in the side of the box opposite your LEDs and feed the wires coming from the switch box into the hole. On the bottom LED of each arrow, attach one of the wires from the switch to the positive lead. Also solder a wire from the ground wire of the battery lead to the negative lead of the same LED. Once everything is connected, test it out to make sure it works and then close the project box. If it doesnt work, make sure all the connections are solid and that none of the leads are touching if they dont need to touch. Mount it on the reflector mount using any method you want (glue, screws, etc.). If you're using a drill, be sure you don't drill into any components in the box.