How to install safety levers So I have an old super le tour and I want to install a set of safety levers on it (trying to bring back the original look) I cannot find an guide online so does anyone know how to install them? 
Dia compe brakes.
"Safety levers" are more commonly called "suicide levers" -- they are hazardous to use and make the operation of the regular brake levers more problematic.

A better choice, if you feel you need something along these lines, are "interrupter levers", also called "in-line brake levers" and "cross levers".

https://www.parktool.com/blog/repair-help/in-line-brake-levers