need help hot wiring brake/turn lights

So I'm holding my old engine bay wiring harness and I know there's got to be an easy way to get power back to my taillights. I yanked my harness out years ago and hot wired the car to drive it (see picture) but, I need those taillights to avoid pricey CA tickets. Now, I havnt touched the wiring behind the dash, only the engine bay. I'm thinking I just need power to the ignition switch but, i could be completely wrong. (I installed a push button so I'm not currently using the ignition. So basically what I'm asking is which wire(s) do I need to reinstall from the original harness to get power back there?