I put one on my H1A a while back. Pretty straight forward install, you just need a 90-degree drill to drill the hole in the front frame plate - otherwise you'd have to drop the forks out for access.
1974 H2B Custom (daily rider) 1971 H1A Custom Cafe build 1972 H2 Full Resto 1971 H1A Full Resto (in progress) 1970 H1 Rat Bike project '72-H2 motor in '74-S3 frame Franken-project couple of S3-400 long term projects (make that one) 1986 Concourse 1000 ("newer" touring bike) 1974 Yamaha DT360A 2008 Yamaha WR250R