5th Gen 4Runner Big 3 Upgrade - Why You Need It
If you've started adding mods to your rig, doing a 5th gen 4runner big 3 upgrade is probably one of the smartest things you can do for your electrical system. Most of us start with the fun stuff—LED light bars, winches, maybe a 12V fridge in the back—without really thinking about the factory wiring that's supposed to power all of it. The truth is, Toyota built these trucks to handle the stock electronics, and not much else. Once you start piling on the accessories, your electrical system starts to feel the strain, and that's where the Big 3 comes in. ...