Others might be able to help but maybe post the year, make and model and then too if you know if it has the original fuse block or what.
Pictures could help also of the fuse block.
There is a reason it was suggested to tie into a particular spot in the fuse block because if you do not do things right things could go real bad should your wire get shorted.
I know I have uploaded BUNCH of wiring diagrams and they are not blurry at all unless you do not zoom in on them properly.
Jim