Why would your lights not work after you replace the starter?

You might have installed the starter with the wrong size sledge hammer. Actually I would start with the basics and check for a blown fuse. What lights do you refer to? Inside, outside or trouble lights? All lights? A word of caution: Sometimes with auto repair you can't assume that Action A caused Problem B.

In Response To My Own Question: I finally figured it out ... the starter's main post had more wires on it than I realized at the time, ( I didn't take them off originally). I found that the light circuit went thru the starter post, and when attached to the ground terminals instead of the battery post on the solenoid I had "NO LIGHTS".

Thanks for trying, someone in the future.