could b fiddly,bt worth a shot.......
im sure the rubber ends on ht leads pull off,so its just bin careful sliding heatshrink over the metal ends on the leads,and if you make em 2 long to take into account the shrinkin when u warm em up obviously,
then leave an overlap onto metal so when you put rubber ends back on theyl cover the join n itl look well neat!
youve gt me thinkin now,tempted to hav a go myself!lol!