My MTU tech is having difficulty locating the 3 MTU "CSIM's" or Control Station Interface Module's on my 2008 59 Marquis. There should be 3 boxes that are wired to the MTU displays at all three control stations / helms. The wiring harness from the flybridge helm looks like it goes from the flybridge helm down into the starboard side of the boat, however disappears after that. Need to check to see why both engines don't run at the same time, however each one can start and run one at a time, just not both at the same time. MTU tech has been working on figuring this out for 2 days already, and mechanically the engines run fine, however he cant find the problem and needs to locate these CSIM's.