speedometer

Hello everyone: I currently have a 90 LS400 with a mysterious code 42 (speed sensor 1). I have replaced the speed sensor, instrument cluster and ECU with no avail. Current symptoms are: Code 42 (O/D light blinking) Dead speedometer Dead Odometer Dead trip meter Gasoline smell Very sluggish...

Hi everybody :) For 1996 ls400 I am trying to connect the ecu to run the speedometer without the circuit board . The actual speedometer has three inputs a 12v , ground and signal. The signal is to be received from pin 12 off the the ecu 28pin plug . It connects to b plug pin 8 on the instrument...