no power to or from tcu after tranny install;HELP

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Like the subject line says. Seriously it was fine before the rebuild, just 190,000+ miles and really crappy looking fluid. Just figured I should go through it since I just put a new motor in. I now have no power from the tcu. It just goes into limp mode. We hooked up the TranX to it and it runs out through the gears great using that. I think the guy that did the R & R for me was just careless and got something f'ed up or wired wrong while he was putting it back in. Everything looks good and nothing is obviously unplugged; atleast that I can see. I took the tcu out last night and took the cover off it. Didn't see any burned resistors or caps or anything and I don't believe it is bad. I think now I'm not even getting power TO it. Where should I be looking??? ANY help at all would be greatly appreciated.
Thanks,
Jeff

 

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FIXED
Just FYI there are two harness plugs at the top of the tranny. They are not idiot proof. If they are plugged in in the opposite position the tcu she gets confused and all you get is "limp home" mode. Swap those two connectors and "Viola"! She works like a charm.
Did get any responses, just thought I would post what fixed it in case anybody else has the same problem & does a search, maybe this will help.
Jeff