Today we changed out a factory headlight on my friend's 2021 Indian Scout bobber! The install was super simple and very quick. You will need a 6mm allen wrench, a Philips head screwdriver, and a small flathead screwdriver. You can use heat shrink or electrical tape as needed if you are not using the power and ground from the blade connectors on the old factory headlight. I'm willing to say that 99% of 5.75 inch headlights with H4 connectors will fit in the housing and work just fine. I hope this helps! Ride safe, ride smart, and I'll catch you in the next one! - Kev