Power source is coming into switches from the light. Want to run power to a second light from the switch. How do I jump the power source. Using 14/2 already run. Don't really have a choice to replace

Are there any wire nutted white or ground wires in the switch box? If the switch power is coming into the switch box from the light, you most likely have a switch loop and you will not be able to add any circuit since there is, most likely, no neutral.

You could take the neutral and the switch leg from the existing light fixture over to another light fixture, if you don't mind both of them coming on at the same time.

If that 14-2 is the only cable into a single gang switchbox , it's just the constant hot coming in and the switch leg going back out, plus a ground wire. You don't have a neutral down in the switch box.