Need Advice Installing IVR into 65 Dart Cluster

I have the instrument cluster out of my 65 Dart, and I have the IVR-3 I bought 3 years ago from RTE. RTE (redfish) is now retired. I have researched this but not found any reference for how to attach the IVR-3 to the circuit board of the 65 Dart. I understand that I'll first need to disable the points inside the fuel gauge. Also, I am completely illiterate when it comes to electronics so I really need to see a picture.

Here are pics of the board and IVR-3. Can anyone tell me where to connect these?

Thanks in advance
Vance Carriere
[email protected]

IVR 3.jpg

Guages.jpg

Circuit boars.jpg