I have an existing switch in my garage for a light I am eliminating. I don't have any lights on the exterior of my garage; so I want to use the power going to that existing switch to power the two new lights. How do I set the wiring up? I have included a diagram if you could help me out and fill in the blanks.

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If you have to ask how to do this you probably shouldn't be doing it. Just my opinion. Hire an electrician.