I've just done a similar repair to a pedal in which the plastic was splitting. There's a loop of green wire (plastic coated steel - what I could quickly find) with the overlapping ends twisted to tighten the loop and then covered with some epoxy resin glue to bond the wire to the pedal, protect it from corrosion and ensure that the twisted ends don't undo. I used the 5 minute epoxy but be aware that if doing a bigger job then use small amounts in stages as it becomes unworkable after about 5 minutes. It needs a lot longer than 5 minutes to properly harden.

Wire + epoxy repair