Chances are that there are two wires coming off of the lights. These are typically red and black, or perhaps white and black...
It's usually universally accepted that the black is the ground wire and the other wire is the "hot".
The hot wire needs to be connected to a power source, with both a switch and fuse of some sort in line with it, the ground just needs to go to a good solid piece of metal (preferably without paint on it) or the negative terminal of the battery.
Dependent on the load of the lights (how many amps they draw) and the amperage rating of your switch, you may need to install a relay to reduce the amount of load on the switch.
There are several threads on how to wire up lights within these forums, many of them probably have at least a rudimentary wiring diagram. A quick search for "wiring lights" or "lights wiring diagram" or something similar should get you several results.
It's tough to give a definitive answer with only limited info.
Good luck
Exco