I recently purchased a m925a2, I am troubleshooting the CTIS, and would be very interested in "renting" the device. My CTIS came with the adapter bung disconnected from the ecu and was sold to me saying (ctis not working). Since digging in, I accidentally found that the unit gives me no lights unless my headlight switch is in stop light mode or headlight mode, none of the black out modes work. I do not fully understand why the unit only works when that switch is on,however I was a little excited when I saw the freaking thing come on. Anyhow, it seems to have trouble getting to highway pressure, I have so far only gotten a solid light for "x/c". I get a flashing highway light for many minutes then the system seems to shut down and begin flashing all 5 lights. I really want to get this figured out, since I bought the truck I want all systems running the way they were meant to.