Will these plug directly into my factory connectors?

They're designed as direct OEM-style replacements, so they should connect at the factory harness points. Test-fit before finalizing installation to confirm alignment and electrical compatibility with your specific model year.

Do I need to remove the bumper to install these?

Access varies by model and body panel design. Check your service manual or installation guide for your specific year — some require partial bumper removal, others allow access from behind the fender or wheel well.

What's the difference between these LEDs and halogen marker lights?

LED bulbs run cooler, last significantly longer, and produce a cleaner, brighter light. They draw less power from your electrical system and won't yellow or degrade like older halogen housings do over time.