The harness people, like Dr. Tweak and a few other, take your original harness and plugs/second harness and make it into one harness based on what you want.
I can't remember the usernames, but there is atleast one person who was/is running an AEM on the 185.
Personnally I am hesitant to mess with mmy 165 harness cause I don't fully understand yet what I can remove from it and how it all interacts with gauges, interior crap.