Evo 9 MR Voltage gauge
 

I removed this gauge for aftermarket gauges a while ago, but I did not know that I had to add a resistor.... Now im having issues that could be related... Does anyone have a wiring diagram of the stock MR gauges so I know which wires I need to add a resistor to? Or atleast the color of the wires that plugs into the plug that goes into volt gauge? I only see a white and and a black and white wire. I also still have the original gauge... if I plug it in to those wires without power and ground and the yellow wire will that work as a resistor?

Thanks

No resistor in the gauge wiring. The OEM gauges plug directly into the radio wiring harness.