car suddenly wont start - never ran great anyway, esp. cold, now cranks, but won't st

[rjSupra]

So, I didn't even know the Auto Transmission had error codes too (thanks Cygnus X-1 for procedure).
I have error codes:
62
63
that are stored. According to Cygnus X-1 it means:
62 - Defective No1 solenoid or short circuit-severed wire harness or short circuit.
63 - Defective No2 solenoid or short circuit-severed wire harness or short circuit.
Don't have any idea if this could be contributing to a grouchy slow Supra in the extreme cold, and the occasional hard shift into OverDrive. ??

And one other note, my wiring harness / loom is, uh, not pretty. Looks like high temps have sort of melted / brittled away some of the black enclosing thingee, and a few wires are open and exposed in front of the CPS area... I can't really get it out, or haven't devoted the time to pull it out for full inspection, I am also sort of afraid of cracking off more of the black plastic stuff, it's very flimsy at this point. Don't know if that could be an issue and causing all of these problems??