What wiring harness are included with the lights? Is it just the RGB or is there a harness for the spot light as well? No pictures or info in the description about this.

Hi, there is no wiring harness are included with the lights. You need to choose add DT wire harness when adding to the shopping cart.

Is there a on/off switch for the spot/flood light that you can put inside the vehicle?

Hello, this RGB chasing halo pods are controlled by the APP named Magic LED, and you can download it on your phone. The pods are easy to install, plug and play.