I plan on upgrading my stock radio to an all after market system...

im going to be drawing a good amount of power from the alternator and other parts of the electrical system..i am 100% im going to do the Big 3 upgrade.

I just want to know how easy it is to do the big 3 on the blazer, and any experiences you all have had with it

 

heres some info from s10forum...


Big Three (Big 3) Upgrade How-To

 

anything is easy if you know what you are doing. Im not a big fan of the link above. They dont show any of the new ground points sanded before bolting the terminals down. Make sure you have a clean bare metal to metal contact. I did the big 3 upgrade in my 1st gen blazer in less than a half hour.