idatalink Maestro aTO3 installation harness HRN-AR-TO3iDataLink HRN AR TO3 Maestro AR Amplifier Replacement Module Harness Powerful iDatalink ready Aftermarket This iDatalink harness connects a Maestro AR amplifier replacement module (sold separately) to your Toyota built vehicle, so you can replace its factory amplifier with a more powerful iDatalink ready aftermarket amp or a compatible processor. This T harness connects to the factory amp's input harness, and supplies audio and databus signals to the
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