Hi there,registered here only after finding this thred in google saerch funny but i have exact same project at the moment

) e39 2003 touring,topasblau 520 and its m-sport! Bought car as it is now,straight after flood,good thing is that sank in fresh water so just need a good dry! did exact same job just after drying my beige carpet when saw your pictures took it out again and fitt black carpet...looks realy nice!

just my car had bussines radio only so gonna try fit tv/sat/nav,have all wiring just all bits is from saloon so dont know how will do gps antenna and the rest... but all bout this i think i compose my own thred some day...Read all your thred and find all same problems in my car,door acctuators,throttle,engine full of water etc... but i did changed everything and start car and che did it after haft turn no problems,all alectrics were fine! but unfortunetly there was two more problems after i did test drive that what you shoud do before drive it because as i understand you didnt checked yet! GEARBOX and DIFF FULL OF WATER!!!!! yes some water get here through breathers which has both ontop,and after i tryed to drive all water mixed with oil and when i checked it was cream allready!!! not much problems to clean diff but auto gearbox pain in a... Have to take oil rad all piping and stripp gearbox cause after changing three times oil in box still bit of cream dirt in oil!!! and also after some drive there was comming gearbox light on and computer said that foult in gearbox swich after i change it it was resolved!!!!

) Good job man,all best in this project!!!