4RunnerRon
New member
As far as legality goes, any HID system installed outside of the factory are not DOT approved. Only factory-installed systems are technically legal. As for the XenonDepot kits, most people can't tell the difference once they're installed, so don't worry about it. Just make sure the headlights are adjusted correctly so the cutoff line is correct and other drivers aren't blinded. If that's done correctly, the 4Runner will look just like a Lexus rolling down the street. Nobody will know the difference (except us!).
As for the harness vs. no harness issue, the argument has been made that a separate harness is designed to protect the factory wiring from being "overwhelmed" by the added draw with the HID system. The XenonDepot harness, for instance, is plug and play and comes with an inline fuse. It's designed to tap into the stock Toyota harness at the driver side bulb connector only for triggering the system on and off. That way, when you turn the headlight switch inside the vehicle, it simply activates the self-contained HID system to trigger on. Then, only the wires and components of that system are used to power the headlights. The beauty of this design is the system is self-contained and won't effect any of the factory wiring or harm your vehicle. Plus, it's easy to take out if needed and convert back to the stock setup.
As for the harness vs. no harness issue, the argument has been made that a separate harness is designed to protect the factory wiring from being "overwhelmed" by the added draw with the HID system. The XenonDepot harness, for instance, is plug and play and comes with an inline fuse. It's designed to tap into the stock Toyota harness at the driver side bulb connector only for triggering the system on and off. That way, when you turn the headlight switch inside the vehicle, it simply activates the self-contained HID system to trigger on. Then, only the wires and components of that system are used to power the headlights. The beauty of this design is the system is self-contained and won't effect any of the factory wiring or harm your vehicle. Plus, it's easy to take out if needed and convert back to the stock setup.