My m5 was hit hard in the side (extremely hard). the ecw and the wiring harness in the engine was cut in the process, my idiot mechanic threw away the rest of the wires off the wiring harness. anyway I want some advice, should i get a new wiring harness installed (very expensive labor and harness is upwards of 1500) or should i get the wires cut from another m5 and spliced into my harness. Does anyone have experience with this? I will post pictures later this week. I ordered a new ecw but have yet to program it and havent decided on the harness yet.