does your stereo require 2 plugs of similar size, 1 for power 1 for speakers ?
try to find whiskey he broke a motor and saved the stereo loom from a late mk4,
some mk3 fiesta`s use the same kinda 2 similar plug set up and early mk5 escort
I`m guessing you have a sound 2000 keycode unit,
or is it the same shape as ebay item 141 542 914 540