find pictures in e38 tips on x5 home page , i replaced my left bank seals on sunday and got pissed off at same point as you so was delighted to find link . ignore coathanger if you have a thin screwdriver and use a small flashlight, read the instructions properly, the spring clips will probably fall onto engine but once you remove wiring box you can easily pick them up.
re attach clips to connectors on box as it just pushes back on to injectors and clips lock into place .
forgot to mention that you will need to lay forwards onto engine to see and remove clips .