[longassname]

I put the top nuts on but just barely and hang the tcu on the ecu but hold on to just the ecu while putting it up there. Get the top nuts past the bracket and then slide it down till the bottom bolt fits in the slot. Then put the bottom nut on. The key is to not get the tcu in the way while you are doing it. It's one of those things that is very easy if you get it just right and really annoying if you don't. I've become unreasonable skillful at it having done it hundreds of times.