CEL hasnt worked since i bought the car, i used to be able to get codes doing KOEO with light + jumper under hood. Swapped cluster and bulbs, still no good. Car seems to run perfectly fine. Smokes Mustang's. I would be far more comfortable with a CEL. Also, with new cluster, temp gauge points at 12 o clock as soon as i turn key to run position. I have a spare x2j, and i cant indetify the pcm thats currently in car. Any suggestions?