The brake light switch on the MZ was a neat design. It was a brass contact inside the rear drum which contacted the brake arm to earth the bulb.
However on this bike a number or issues with the light not working or flickering meant a more traditional pedal switch was fitted. The idea was that this would be an non-invasive modification which could be reversed if necessary.
Behind the right hand side panel was a steel bracket mounted on the swinging arm pivot. The idea was to mount a pull switch here with a direct line-of-sight to the brake pedal.
A pull switch with a 12mm threaded body was ordered from Feked Classics. It came with the pull wire to be cut to length.
A 3D printed bracket was drawn up to hold the switch. It located on the hole in the bracket and was secured with two zip-ties.
The brake pedal cable capture was drilled to take the pull wire.
The completed assembly looked like this. The switch was then adjusted to set the trigger point.
The 3D print file can be downloaded by clicking this image. It is recommended to be printed in PLA with 100% infill.
With the side panel refitted, the modification looked discrete and proved more reliable.
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