first of all,
not to discourage u or anything
but i dun think u are suited for DIY
since DIY requires lots of guts and are able to accept mistakes that might break a thing or two
but heck, i could be wrong
okay, now back to the topic
just use a small flat head screw driver ( and i mean smaller than testpen )
and put the screw driver into the part where it clips, wah lah, one side out, now use another screw driver for the other side and wah lah, both side is out
then u can just pull it out of the switch already
do becareful considering the fact that there is springs inside ( two springs to be exact )
and switches uses a micro small bulb
do get that ready
i couldn't find the correct size with the correct bracket, but then i found the correct size without the bracket
i will leave it up to ur imagination to figure out how to fix the bulb ya