Can '64 Dart Temp Gauge Be Adjusted?

Okay you guys, an update and a question. Update; I tested the IVR and it failed. Greg at RT-ENG is sending me the IVR3 model. I've cleaned up all the contacts on the back of the instrument panel, added a ground wire and am soaking the plastic round pin connector in white vinegar. I also checked and got 0.1 Ohms resistance between the frame point where the panel ground wire will attach and the Neg lug clamp on the battery cable. And just for driving pleasure, I ordered SlantSixDan's recommendation for LED dash bulbs.

The question; RT-ENG instructions shows bending the contact point arm backwards to disable the fuel gauge mounted IVR. In the movies, they never cut the white wire but it looks like I could cut out the white wire in the pic to disable the contact points. The only time I get into trouble is when I think! :BangHead: How do you all disable the gauge mounted IVR?
ivr2.JPG