I have can bus gauges from speedhut. I have tach, oil press, temp and volt. I have the readings on a scan tool but nothing with the gauges. do I need to reconfigure something in tuners. It is a e38 vcm if that helps. I swapped between the gauges and none of them work. It acts like the scanner is still plugged in. Went through all this with speedhut and they said it must be on my end. Any help would be great. thanks