Stereo Wiring Harness - AutoZone Equip cars, trucks & SUVs with Stereo Wiring Harness from AutoZone. Get Yours Today! We know our parts and products. Universal Female ISO Radio Wire Wiring Harness Adapter Female Universal ISO Radio Wire Wiring Harness Adapter Connector Car Adaptor Plug: This wiring harness is required to connect an after-market stereo with standard ISO connectors to your vehicle specific wiring. The wiring harness adapter does not require any wire cutting, soldering or other assembly. It is completely Plug & Play.