multi-function switch
 

Hello all. I have a 99 Z34 with the "standard" option junk MFS.Ive described the symptoms my car has,now I have a new one.During a hard rain or melting snow the brake lights go out.The third light in the rear window does not.When the lights do not work the brakes are affected also.Maybe the ABS? Im thinking the MFS replacement will fix this.Any thoughts?Everything is greatly appreciated. Muley