After the success of the guide for fitting puddle and warning lights on the A3 (http://www.audi-sport.net/vb/new-a3...my-diy-guide-retro-fitting-puddle-lights.html) i have decided to do a guide for the A4 which is for the B6 and B7 models. Points to note: - Vagcom is not needed, the puddle and warning lights do not need to be coded on the A4. - Door card clips are very brittle so they can break when removing the door cards, these can be bought from Audi cheap incase they do break. Firstly you need to remove the doors cards. On the front doors you need to remove the door trim (this pulls off and slides forwards) which gains you access to the 3 screws, remove these. Remove the cover underneath the door handle (this is only on the drivers door, the passenger side has 2 screws under the door handle). Remove the 2 screws underneath this. Remove the screw from the bottom of the door card. The door card will now pull off. Remove the door handle pull cable connector from the door card and the electrical connections from the door controller and the speaker. Now you will need to create the hole for the puddle light, i use a drill to make lots of small holes and then a file to clean the edges up. The red plastic reflector on the end of the door card can be popped off and the warning light fitted into its place. Now to the electrical part. Remove the pink plastic part of the connector by sliding it down. This will allow you to pull out the connection block. Now to fit the loom. Supply to the lights comes from pin number 13 (Post 07 May cars supply is pin 16). Now the earth wire needs to go into pin 21 however this is already been used by the window switch therefore it needs to be shared. Remove the existing wire out of pin 21 and solder it to the wire on the loom. Push the wire into pin 21. Connect the other end of the loom to the puddle and warning light. You are now ready to refit the door cards, ensure that you refit the door handle cable and electrical connectors. Check that the lights are working, on a 2003/4 A4 they worked straight away however on a 2006/7 A4 the following step was required to get them working: Remove the passenger side sill cover (marked in red), this pulls up as it is clipped on. Then remove the plastic side piece which the sill cover is attached to. Behind this plastic cover you will see a bunch of electrical connectors, you need to disconnect the black connector (furthest one away from you) and then reconnect it up. This resets the control module allowing the lights to work. Thats job done for the front doors. The rear doors are very similar, remove the door cards by removing the door trim and removing the screw underneath it and also the screw underneath the door handle. Remove the door card and drill the holes for the puddle lights in the same way as the front door cards. Now remove the small brown cover from the door controller connector. The supply for the lights is pin 2 and the earth is pin 6, the earth does not need to be soldered as the pin is already free. Refit the brown cover. Connect the looms up to the lights. Refit the door cards. Check that the lights are working, on a 2003/4 A4 they worked straight away however on a 2006/7 A4 the following step was required to get them working: Pull the rubber cover from the B pillar door connector. Disconnect the plug from the car and reconnect it, the lights should be working now. Here are the results! If anyone is interested in this retro fit i can supply the looms and also can fit these to you car if required, please pm me for details.