The primary harness is the harness that plugs into your cars main entertainment system connector and converts it into a double ISO connector system (Universal). After selecting your primary harness you then select a secondary harness to connect between the ISO connectors and the aftermarket head unit that you have ( this is selected based on what brand and type of head unit you have. We carry both non steering wheel control type primary harnesses and steering wheel control type.

APP0259 Iso harness to suit Toyota & Lexus - various models amplified

18 pin
Description: 

The APP0259 allows you to retain the factory amplified system in your Toyota or Lexus when upgrading to a compatible aftermarket headunit. The harness plugs into the factory Toyota plug behind the original headunit and converts it to 4 RCA plugs, which connects to the RCA inputs on the rear of the aftermarket headunit (front and rear). The harness also provides an ISO connector for power and earth connections. To simplify the installation process, add an Aerpro APP8 aftermarket headunit ISO harness which will connect from the aftermarket headunit directly to this harness.

  • Please Note:
    • The aftermarket headunit requires 4 RCA inputs (front / rear).
Features: 
  • Allows aftermarket headunits to integrate with the factory amplifier in your Toyota or Lexus
  • Toyota specific plug converts to 4 standard RCA plugs and ISO for power/earth connections
  • Aftermarket headunit must have Front and Rear RCA AMP inputs
  • Compatible with Aerpro APP8 Aftermarket Headunit ISO Harnesses
  • Simplifies headunit installation
Specs: 
  • HARNESS TYPE: PRIMARY HARNESS
  • PLUG TYPE: VEHICLE SPECIFIC
  • CONNECTION TYPE: ISO & 4x RCA PLUGS
  • NOTES:
    • Aftermarket headunit must have Front and Rear Inputs for amplifier
    • Wiring can change from vehicle to vehicle. Please check factory wiring before installing.
    • Blue/white: amp trigger
    • Pink: Mute
    • Suitable for Lexus models with 18 pin connectors
Vehicles known to work with this product:

Weight: 

0.05KG