Huge thanks to jjh for posting Blake Nelson's diagram, and to Louis Wang for the electrical education! I finished the side marker project and it looks awesome! I used Mondeo lights from BAT. My car is silver, and the contrast really pops with the amber lights. I failed to get the digital camera from work for in progress pics, but i'll take some finished and post. I bought small 'project boxes' from Radio Shack to house the resistors and diodes - very clean looking..........