please check your model with the pictures..find yours then look at the layout of the pcb...printed circuit board.....the diod will be located as shown..the top...or...bottomcasing will need to be removed...most are clipped on and not screwed so that should be quite  easy...now!!..run the decoder software and check the boxes that are connected on your pcb...this will show the code as you check the boxes....if done right this will show the correct unlocking code....regards swompy