Electrical mods include anything that requires wiring your own harness, any DIY electrical set-up, splicing and cutting wires, and much more. Whether you are looking to build a DIY switch or a DIY set of rock lights, you will find it on Trail4R.com. We feature hundreds of write-ups from a huge community of DIY 4Runner owners on custom electrical mods. Trust Trail4r.com for your next wiring project on your 5th Gen 4Runner.