You can replace just the hinge, but but you may have to remove the entire hinge to get yhe old one out and the new one properly seated. The springs are held into place in a slot in the pillar-side hinge plate by two little u=shaped "washers" for want of abetter term. Also, I found that the little rollers that rotate against the top of the spring and hold the door open were badly worn. If the door stops were working properly before the spring broke, you should be in good shape.

I belive the fuses must be moved. I disconnected the battery and removed:

- the door sill (just pull up sharply at the front),
- the door piping at the front of the door from the floor to the top of the dash (just pulls off),
- the fuse cover,
- the kick panel (it isloosened when you remove the piping),
- and finally, the two screws that hold the fuse block to the inside of the hinge pillar.

The good news is that you can just push the fuse block out of the way. There is no need to remove fuses or wires.

Good luck. A floppy door is SO annoying!