Light conversion?

They fit easily, they are the same shape as any sealed beam. Get the relay kit, though. I owned a bar and would drive home at 3am and all of a sudden - poof! - no headlights. Then they would pop on. The relay kit makes them bright all the time, taking the rpm dim/bright out of the equation. Then the only power draw on the headlight switch is whatever it takes to switch the relay on, very little. I bought mine from Daniel Stern, aka SlantSixDan. My next one will be from crackedback, a much nicer, less opinionated and easier to get along with FABO member. Plus, I burn through a $25 relay twice a year on the DS setup.