Why does this harness work on a 2000 & 2002 but not 2001 gs300 n

This item will fit a 2001 NON Mark Levinson Audio system. If you need further assistance, please contact the Scosche Tech Support Team at 800-363-4490 Ext. 3.

Is this for factory pioneer amps or will it work the Nakamichi system?

If your factory amp is located behind the glove box, this will work.

So to bypass the factory amp just unplug the 2 bottom connectors from the factory amp and plug the kit into them and run the loose ends to the radio?

You unplug the white connector set 10-pin/6-pin (amp output to speakers). Connect the LS02B harness and run it back to the stereo location. Then connect the aftermarket speaker/power wiring to the LS02B harness.

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Description

🔊 Upgrade your Lexus audio game—no hacks, just pure sound!

TRUSTED RELIABILITY - Backed by Scosche’s lifetime tech support and limited warranty for peace of mind.
SEAMLESS PLUG PLAY - Fits select 1998-05 Lexus models perfectly without any wire splicing.
AMPLIFIER BYPASS POWER - Skip the OEM amp hassle for direct, clean aftermarket stereo integration.
EFFORTLESS DIY UPGRADE - Standard wire colors and connectors make installation a breeze—no special tools needed.
PREMIUM SIGNAL QUALITY - Factory-grade wires ensure optimal audio transmission and superior sound clarity.

The Scosche LS02B Amplifier Bypass Wire Harness is a precision-fit adapter designed for select 1998-2005 Lexus vehicles, enabling seamless aftermarket stereo installation by bypassing the factory amplifier without cutting any factory wiring. Crafted with automotive-grade materials, it ensures superior audio quality and easy DIY installation, supported by Scosche’s lifetime tech support and warranty.