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Step 10Attach the Resistor, Battery, and Switch
An extra wire should be connected from the positive leg of the central back LED to which you can twist the resistor. The other end of the resistor should be twisted to the positive end of the battery.
Using electrical tape or other adhesive, attach the battery to the inside of the head. The 9V is little, but carries plenty of weight so make sure that it is firmly in place. Remember to attach it in a place where it won't interfere with your head.
The negative end of the battery should be connected to the switch that will turn the LEDs on and off. I wanted the switch to be in a place where I could easily access it with my hands, so I took a length of black wire and snaked it along the inside part of the back and sides of the costume. I taped it down with electrical tape at intervals to keep it in place and then cut it when it had reached the correct length (so the switch would be on the inside of the front of the body, right near my hands). I twisted the end of the wire with one end of the switch.
Starting from the central back LED's negative terminal, I snaked another wire down the inside of the opposite side of the costume until it met the other end of the switch. I cut it off and twisted it to the other terminal of the switch.
You should now have a complete circuit. Test it by turning the switch on and seeing if everything lights up. If so, continue. If not, try and figure out and fix the problem.
Using electrical tape or other adhesive, attach the battery to the inside of the head. The 9V is little, but carries plenty of weight so make sure that it is firmly in place. Remember to attach it in a place where it won't interfere with your head.
The negative end of the battery should be connected to the switch that will turn the LEDs on and off. I wanted the switch to be in a place where I could easily access it with my hands, so I took a length of black wire and snaked it along the inside part of the back and sides of the costume. I taped it down with electrical tape at intervals to keep it in place and then cut it when it had reached the correct length (so the switch would be on the inside of the front of the body, right near my hands). I twisted the end of the wire with one end of the switch.
Starting from the central back LED's negative terminal, I snaked another wire down the inside of the opposite side of the costume until it met the other end of the switch. I cut it off and twisted it to the other terminal of the switch.
You should now have a complete circuit. Test it by turning the switch on and seeing if everything lights up. If so, continue. If not, try and figure out and fix the problem.
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