Need a little wirig help.

[96OCC]

Hope to find some help here. This is my first post so here goes. My problem is locating two wires, one that goes to the tcc lock up solenoid from the pcm and the other that goes to the trans fluid temp sensor. My torque converter is locking up in first gear and causing hard shifts and also seems to hunt around for forth gear at or above 40 to 50 mph. I have read a lot of post here and it seems that there could be a few possible problems. Could be a bad sensor and or wiring issue, a bad or stuck soleniod or a bad pcm. The car is a 96 cutlass ciera/3100/4t60e. The car runs great just has this trans problem that a lot of people seem to be having. If I knew which wires to check the sensor I belive I could fix the problem temporially untill the weather warms up. Also if antone knows the range of the temp sensor that would be helpfull too.

Thanks Steve