I have 2007 9400I with Cat the guages
Engine Oil temp. Transmission temp guages
Quit working the Voltage guage when you accelerate goes backward 12.5 at night 13 volts day time also I notice trip meter jumps two tenths of mile some times 3 tenths of mile I have cleaned all grounds changed and cleaned battery cables had alternator checked at alternator shop I checked with volt meter voltage is correct
Thanks