wideband wiring woes

[lazersgm]

hello all. i have a 93 240sx se with the stock motor. i am puting in a aem ugeo wideband gauge. before i put the gauge in the car was runing ok short of a slight idel problem and miss fire at idel. i put in the gauge and hooked up the narowband output wire to the wire that led to the ecu from the engine bay. now the car is runing realy crapy and i get a code 33 from the ecu. i cant maintian a crusing speed becuase it bucks like mad. i know this setup has worked with other 240sx. i checked the voltage on the narowband line while it was hooked up to the ecu when the car was runing and i was geting 1.3v some times more. i checked the voltage on the narowband whithout the ecu hooked up and it would not go over 1v. i am geting voltage from the ecu at .3 volts. dont think that is normal. i made sure the ecu case was screwed down and grounded and i have reset the ecu by disconecting the neg term on the battery for more then a hour. any of you out there ever have this problem? any ideas on what i should do? can you check your voltage at the ecu side of the o2 sensor wire with the ing on and the o2 sensor disconected and tell me what voltage you get? thanks for any help you can give me.