Fuel gauge wiring question

In the RTE instructions, it says to bend the limiter points out of the way, and their diagram does not show a black wire to cut, am I correct to assume that they are just using an old scrap gauge that doesnt have a wire for illustration purposes? Also, in your picture that shows the bundle of three wires, it does not show the ground attaching to the new ivr, so Im assuming that its just a ring terminal that goes under the mounting screw of the irv then to the ground on the circuit board?
As before, thanks for all the help!
Sorry if I am muddying the waters.......@moparmat2000 is using a different IVR than the RTE in my original post (I assume that is the one you purchased). The unit will be grounded (no extra ground lead) once you attach it to the noise suppressor hole in the gauge frame. Then it's just 12v in and 6v out.