For lower cost alternative that is square instead of round but has the same fit and function use SRB520.
Fits MGB, Spitfire, TR4, TR4A, XJ6, XJS
Jaguar, XJ6/12, Brake Warning, 1978-1979;
Jaguar, XJ6/12, Fan Override, 1974-1979;
Jaguar, XJ6/12, Heater Fan, 1976-1979;
Jaguar, XJ6/12, Blower, Fan Override, Horn, Ignition, Sun Roof, Window Lift, 1980-1987;
Jaguar, XJS, Horn, Ignition, Window Lift, 1982-1987;
Jaguar, XJS, Wiper, 1980-1989;
MG, MGB, Starter, 1976(from #395392)-1980;
Triumph, Spitfire, Starter, 1971-1976;
Triumph, TR4A, Horn, 1965-1967;