Factory Radio Add A Sub Amp Plug & Play Harness compatible with Toyota Scion Lex


Want to add a subwoofer to your original stereo?

Don’t want or know how to cut into your wiring?


Take the wiring guess work out of the installation with this plug and play wire harness!  Installation is as easy as 1, 2, 3!
  1. Remove your OEM factory radio
  2. Unplug the OEM factory wiring and plug in this wire harness
  3. Reinstall your OEM factory radio

What is it?

This wire harness provides a line out converter for connection to one set of RCA cables to provide an audio signal to an external amplifier.  All that’s left for you to do is connect your own main power wire from your battery and a ground, and remote amp turn on.(See other listings for a harness with an included remote turn on wire.)

What you will receive
  • One (1) plug and play wire harness
Compatibility Notes
  • This is for the base radio only, will not work with premium sound systems.
  • After installation, "bass level" can only be controlled using the EQ on the radio.  Please see our other listings where we offer bass knobs that allow independent subwoofer controls.

Compatible with these models

MAKEMODELTRIM / QUALIFIERFromTo
Toyota4Runner20202020
ToyotaAvalon20192020
ToyotaC-HR20192020
ToyotaCamryw/ 8-inch touchscreen radio20182020
ToyotaCamryw/ 7-inch touchscreen radio20182020
ToyotaCorolla20202020
ToyotaCorolla Hatchback20192020
ToyotaMirai20182019
ToyotaPriusL, LE, XLE20202020
ToyotaPrius PrimeXLE20202020
ToyotaPrius PrimePremium20172019
ToyotaRAV420192020
ToyotaSequoiaw/ charcoal high gloss color dash20202020
ToyotaSequoiaw/ black high gloss color dash20202020
ToyotaSequoiaw/ matte black color dash20202020
ToyotaSienna20182020
ToyotaTacoma20202020
ToyotaTundraw/ black high gloss color dash20202020
ToyotaTundrahigh gloss w/ silver sides20202020


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Converter adjustment instructions:
  1. After completing all of the necessary connections, turn the adjustment pots all of the way down by rotating them completely counter-clockwise.
  2. Turn the stereo system on and adjust the main volume control on the stereo to approximately 3/4 maximum volume.
  3. Select one of the adjustment pots and turn it slowly clockwise until you notice audio distortion and then stop.
  4. Turn the remaining pot to the same position as the previously adjusted pot.