Dont let it intemidate, not to bad at all.
Gauges in general you need a ground, I simply drill a hole and run a short wire to a screw, power is needed and once you get a power source in the area you can splice it to the 3 wires needed one for each gauge, lights you can do 2 ways, either run a wire over to your other hot for the gauge and have the lights on all the time or you can pull the bezelle on the dash and tap a wire there so it will dim just like the cluster. Now on the F/P gauge I assume you have a sender and a banjo bolt, if so just install the banjo bolt at the vp-44 connection and use a grease gun hose into that and the sender on the end, this will take the pulse or vibration out of the sender and increase the life of the sender, the 2 wires from the sende are to a ground and to the gauge.
Cheers, Kevin