I found a cable that does essentially the same thing as what is depicted in the Van's KIS figure regarding the ELT remote cable connection; it just isn't exactly as depicted. So I made that connection. Also installed the GMU 11 (magnetometer) on its bracket and installed the unit on the bracket in the tailcone. I did not connect the DSUB connector. I'll crawl back in there to do that once the tailcone is attached. I have not yet found the GSU 25 -- ADAHRS -- in my stack of boxes that I've kept at home (until the new insurance kicks in at the hangar in a couple of weeks; I raised the value to $90,000) . I'll keep looking.