you don't really "solder them back down" - by soldering correctly, you fill the crack with solder - actually everything "comes together" with solder. google "cold solder joint" - also look online for beginner soldering tutorials. the "bulbs" are LED's - they are also fixed by resoldering the broken solder joints. i don't have a pic of the module taken apart but it is pretty simple. once you get the module out there are some tabs in back - pry those out of the way while pulling the back off and things will open up. inside you will find 2 circuit boards - fix ***EVERY*** bad solder joint (use a magnifying glass) you see, reassemble, and you should be good to go. you can test your work by plugging your module back into the connector you disconnected when you took your module out - i think the connector is 12 or 14 pins - something like that. turn your key to IGN (ON) and the module should light up. i cannot stress this enough: fix every bad solder joint or it probably won't work or just some of it will work (light up). hope that helps.