I've got the OEM foglights in my car, and they've both been cracked. Are the eBay foglights direct drop-in replacements? ie. Can I just take out my broken foglights, plug in the eBay foglights to the existing wire harness, and put them back in my bumper?

Also, anyone have any tips on keeping the foglights from getting cracked?

yes, they're direct replacements.

get ebay fogs and cover them in either 3m tinting or lamin-x...i have 3m tinting and its keeping it safe from road debis