My last gasp to fix my faulty temp gauge ('02 P38 Thor) is the serial link from the BECM to cluster but I can't seem to find the right plug/wires from the BECM on Rave. Any help would be appreciated. For what it's worth my temp gauge only registers bottom of the blue. I've checked/replaced the temp sensor, swapped BECM's, swapped instrument clusters. And even rewired the sensor black ground and directly wired the green wire to the BECM with no luck. I can get a OBDII reading but nothing to the cluster gauge. I do get correct ohm reading from the sensor.