Review on Beck Arnley 201 1684 Back Up Switch by Darnell Evans

I bought this switch for a F5M21 transmission on my Mitsubishi Lancer 97 (94 US Mirage S). I had to use a rubber ring to separate it from the gearbox a bit as it is 1-2mm longer than the stock rear derailleur. That being said, I highly recommend it, and sometimes you have to understand what's going on before you think something's broken.