This works great.
I had two tag icons so simply changed one of them from,
'<span class="tags-links">%3$s<span class="screen-reader-text">%1$s </span>%2$s</span> ',
to
'<span class="cat-links">%3$s<span class="screen-reader-text">%1$s </span>%2$s</span> ',
thanks Tom,