my original gauge has "connectors" between the studs, The repo TPP does not, On the repo gauge, are they needed ? new gauge on the left, factory on the right
The "connectors" on the original are resistors. I'm not sure, but I assume you don't need them because either they are built into the new pod, or the new pod has transistors or some other modern technology that doesn't require the resistors. That's a pretty car in your avatar, Keith!
The resistors are used to slow down the needle movement. If you accelerate or go around a corner and your fuel gauge moves around, especially with 1/2 a tank or less, you'll need to transfer them to the new gauge. You probably won't notice it as much with the temperature and oil pressure gauge. The new gauges may have them built in.