Alternator wire upgrade on 91 c1500

[El profe]

Hi everyone, new guy here. Recently on my 91 c1500 I have been ¨upgrading¨ my battery cables and grounds. About a month ago I could not get the truck to start. I thought it was the fuel pump but it was not and I ended up changing some parts and took it upon myself to change cables too just in case. It ended up being the IAC. I m just about done with the cables but in upgrading the alternator wire I wanted to make sure I can do what I want to do. My alt wire does not go directly to the battery, it goes to a junction block on the firewall. My truck came from the factory like this. I want to run it to the battery since I have read in different places that that is where it should go. Should I do that or leave it as is ? Either way I want to upgrade to a 4awg with a 8awg fusible link, like I said from alternator to fuse block or directly to battery. What do you guys think or has anyone else run into something like this.

 

[AK49BWL]

There shouldn't be an issue running it straight to the battery, but I do like the idea of it going to the junction block better because that is one less connection to fail at the battery terminal. The less I have hanging off the side post, the happier I am lol.