yeah as above, i assume you bought the rclick kit yes? if so it has a nice little hole for the chip, just pop it out the old key and put it in the rclick fob. use some double sided tape or a blob o glue to keep it in place. oh, and note the orientation it came out your key, put it back the same way. i dont think it really matters but the mk3 chip has 1 corner missing so it will only fit 1 way in the mk3 key