The Triumph GPS connector kit allows you to plug into the factory wiring harness under the tank without cutting any wires and gives you a fused circut. It does not have any kind of connector to plug your GPS into.
You will need to either add a power socket or splice into the power cord for your GPS. I would add a socket to bike. Many people have enlarged the existing pluged hole on left side under seat and added a cigarette light there, Triumph has a kit that puts a BMW/DIN socket there, hardest part is finding the right connector to plug into.
If you want the power socket up front you will need to figure out mount your self. The BMW/DIN/Powerlet socket is smaller and easier to fit but I'm sure you could make a cigarette lighter work to. There are good arguments for use of either type.
Here's a picture of the factor kit so you can see.