For those wishing to fit Stateside side markers to their bus. First the legal stuff: http://www.legislation.gov.uk/uksi/1989/1796/regulation/11/made Now the fun stuff. If you have a Stateside bus your work is done. It is a case of wiring the side marker circuit back in to the side light circuit. If you have bus from Europe the best option is to find the twin filament bulb holder as found in the rear lights. They pop in and that's it. It will mean you won't have the 5w side marker but that really isn't a problem. To be honest it is a bit of a waste of a bulb. You will find all the wiring details you need in the Haynes book of lies. Locate the side light circuit and with the use of scotch-locs your wired in and ready to go. If you have a Stateside bus you will find a clear block containing 3 wires in it. One of those is for the side markers and should be live unless the wiring has been hacked. If you want them to flash with the indicators here is something l did by mistake. Note however that l have corrected it and mine no longer flash. Wire in the live as normal. Locate the indicator live and wire this in as your earth. It sounds a bit of a bodge but what l noticed was that with the lights off it flashed with the turn signal. With the lights on it flashed when the indicator was not flashing sort of earthing itself out. If you are to want them to flash and stay on the best option would be to wire in 3 wires to a modified bulb holder with lives for indicator and side marker and 1 earth. Normal mode. Flash mode. For normal fitting, it is far easier to buy a new bulb holder that is part of the reflector as found in the rear ones. It will however mean you will have to drill a largish hole in the door. To wire up the door side marker it will help if you have speakers in the doors. This way you can follow the rout of the speaker wire. The hole and holder. The result.