Lets put some LEDs in movie Ratchet. We will put a blue one in his head and white ones on all his lights. (Some of the photos are different in size, so just be patient when uploading/viewing the tutorial!) Tools needed: Soldering Iron 1mm drill bit 3mm drill bit 5mm drill bit Exacto knife Phillips screwdriver Flat screwdriver File Wire- 2 colours. I pulled apart some 25 core data cable to get the really thin wires. Heat shrink tubing - big enough for 2 wires. Black paint small paint brush The LEDs I used are: 3mm blue 5000mcd x 1 head 5mm white 1500mcd x 2 headlights 3mm white 1000mcd x 7 grille/roofrack The mcd is the brightness rating, the head needs a brighter one to penetrate the light piping. All leds have a forward voltage of 3.5v so we can run them of 2xAA batteries without resistors. We'll start with the roof rack. Remove it from the figure. Using an Exacto knife, we need to make a small dent in the center of the light lens. To make it easier you could file the lens down so its flat instead of curved, this might make it easier to find the center. Next grab a small drill bit. The size doesn't matter very much; I used a 1mm bit. Use the small hole you made to center the bit and drill down a few mm. If the hole is not centered, you can angle the bit and drill some more to center it. Now grab the 3mm bit and do the same thing, use the small hole as a guide and drill right through. You can use a power drill here if you want, I used a T handle that normally holds a tap (as in tapping a threaded hole) there much less chance of damaging anything. Now grab a file and rub down the plastic light lens until its flush with the surrounding. This is so the tip of the LEDs stick out. You might need to flare the holes out a bit. Just put the drill bit in and work it around a bit. The LEDs should be a tight fit in the hole so you don't need glue. The 2 inner ones are a bit tricky to get in. Use pointy nose pliers, and be careful not to break the LED. When you put them in pay attention to the 2 wires coming out of the LED, one will be longer than the other; the longer one is the positive wire. Install the LEDs so all the positives are on the same side. This makes it easier to get the polarity right when you connect them. Once they're in connect the + to + and the - to - Now put some solder on these; be quick so you don't burn out the LED. You can have them shorter than this but it increases your chances of cooking the LED. Attach some wires: one pair approximately 10 inches long, the other around 5 inches. Slide some heat shrink tubing over the wires, you need 2 bits that extend to the bottom end of the roof rack.