I need help with the Big Three upgrade on my blazer, I have the mega fuse block underneath the battery on my car and I just need help with how to route the wires when that is down there. Any help is appreciated, I am new to any kind of wiring.

 

Check out this thread. I saved it as a pdf for my personal reference, but I have not implemented it.

https://blazerforum.com/forum/articl...upgrade-97077/

 

Hi there, have a question for you. Is the reason for doing this because you are installing or have installed a stereo system?

 

When I was looking into doing this upgrade, I was considering it to ensure I had enough electrical power for a winching system. But I suppose the same need could come for an audio system. It would all come from the power balance equation: The power that can be delivered by the electrical system of the truck must match or exceed that required for the system(s) being run.