Originally Posted by
06300CSRT8
So a little further info thinking back, I actually had two rounds of bad wiring. First round was I had my 5v supply for the MAP sensor feeding the ECT signal wire to the ECU. I then switched and got the right wires connected, but still had the ECT and IAT wires switched. Lastly fixed that wiring. I don't think the ECT and IAT switching did any harm as they are basically the same Ohm in/out, but certainly seems like sending the 5v signal through the ECU did some harm to the gauge cluster.
Weird thing is the gauge sweeps at key on, so its still getting something from the CAN BUS.