crashzx6r

I have a 87 cheokee laredo.....command trac, auto trans and 4.0 straight six. it wont shift outof low gear sometimes...im having trans rebuilt by guy i know and im by passing the radiator lines from trans and upgrading to bigger trans cooler that was the trans and lines will be fresh....i need to know if there is any electrical harnesses that are on the trans or for the trans.....besides sensors that will be replaced. if anyone knows can someone let me know where all sensors, relays or harnesses are for the trans besides the sensors on it if there are any. thanks guys i apreciate it greatly.....