I did a few changes to mine,my UK car comes with two rear red fog lights(fitted with 21w bulbs) I removed these bulbs,replaced them with 5w bulbs,rewired them into the side light circuit,then I fitted a red 21w bulb into the offside reversing light housing,and rewired that back into the original fog light circuit.(you with me?) so I now have 4 rear red side lights,2 red brake lights,one white reversing light and one red rear fog light
Also I purchased (thanks Nate) 2 rear/side side marker lights/lenses,fitted these with 5w bulbs and wired thse into the side light circuit.Led number plate bulbs finish it off nicely.