Ok, for anyone whos interested, I finally replaced the blown fuse on my 12v charger. Here is the process I followed:
1) unscrew the eight black screws on the back of the cowl
2) gently pop off the blue face plate above the headlight
3) unscrew the 10mm bolt on the face above the headlight
4) unscrew the two screws inside the wheel well (on the black plastic side of the wheel well)
5) I unscrewed the four screws inside the glove compartment, but I dont know if this was necessary
6) carefully unpop the plastic tabs on the bottom of the cowl and pull the cowl away from the body
7) unscrew the plastic retaining ring from the back of the 12v charger
8} detach the charger at the rectangular quick connect
9) take out the old fuse by pressing the ends of the fuse holder inward and turning
10) the existing fuse is .87a 5mm x 20mm, i was able to fit a 1/4" x 1" 3a fuse in its place.
11) reverse the process