What is the purpose of RCA inputs and outputs on a car stereo, and what is the difference between the various types? - Quora
![20 Pin Plug Car Stereo Radio RCA Output AUX Wire Harness Wiring Connector Adaptor subwoofer cable for android car radio RCA - AliExpress Automobiles & Motorcycles 20 Pin Plug Car Stereo Radio RCA Output AUX Wire Harness Wiring Connector Adaptor subwoofer cable for android car radio RCA - AliExpress Automobiles & Motorcycles](https://ae01.alicdn.com/kf/Hf7bfc0e0f639443f834f4f7af7789a3cd.jpg?width=1000&height=1000&hash=2000)
20 Pin Plug Car Stereo Radio RCA Output AUX Wire Harness Wiring Connector Adaptor subwoofer cable for android car radio RCA - AliExpress Automobiles & Motorcycles
![Iying Car Stereo Radio Rca Output Wire Aux-in Adapter Subwoofer/amplifier 3.5mm Female 20pins Harness For Head Unit Carplay - Speaker Line - AliExpress Iying Car Stereo Radio Rca Output Wire Aux-in Adapter Subwoofer/amplifier 3.5mm Female 20pins Harness For Head Unit Carplay - Speaker Line - AliExpress](https://ae01.alicdn.com/kf/H0c14446cb9a54e70baa384085b43be53f/Iying-Car-Stereo-Radio-RCA-Output-Wire-aux-in-Adapter-Subwoofer-Amplifier-3-5mm-Female-20pins.jpg_Q90.jpg_.webp)
Iying Car Stereo Radio Rca Output Wire Aux-in Adapter Subwoofer/amplifier 3.5mm Female 20pins Harness For Head Unit Carplay - Speaker Line - AliExpress
![24 Pin Plug Car Stereo Radio RCA Output Wire Harness Wiring Connector Adaptor Cable for Pioneer AVIC F900BT and AVICF90BT|car stereo plug|car radio cablecar stereo cable - AliExpress 24 Pin Plug Car Stereo Radio RCA Output Wire Harness Wiring Connector Adaptor Cable for Pioneer AVIC F900BT and AVICF90BT|car stereo plug|car radio cablecar stereo cable - AliExpress](https://ae01.alicdn.com/kf/Hf02bb3610c1f481f8ece84e9d11e5ef2V.jpg)
24 Pin Plug Car Stereo Radio RCA Output Wire Harness Wiring Connector Adaptor Cable for Pioneer AVIC F900BT and AVICF90BT|car stereo plug|car radio cablecar stereo cable - AliExpress
![Bestycar Car Stereo Radio RCA USB CAM in Cable GPS Antenna Wire Harness Kit for 9'' or 10'' Aftermarket Android Headunit with 16pin Power Socket 20pin RCA Port : Amazon.co.uk: Electronics & Bestycar Car Stereo Radio RCA USB CAM in Cable GPS Antenna Wire Harness Kit for 9'' or 10'' Aftermarket Android Headunit with 16pin Power Socket 20pin RCA Port : Amazon.co.uk: Electronics &](https://m.media-amazon.com/images/I/515JJtQDebL._SL1000_.jpg)
Bestycar Car Stereo Radio RCA USB CAM in Cable GPS Antenna Wire Harness Kit for 9'' or 10'' Aftermarket Android Headunit with 16pin Power Socket 20pin RCA Port : Amazon.co.uk: Electronics &
![Amazon.com: 9-pin RCA Output Cable Car Radio Video Audio Adapter Cable Car Stereo RCA Output Input Cable : Electronics Amazon.com: 9-pin RCA Output Cable Car Radio Video Audio Adapter Cable Car Stereo RCA Output Input Cable : Electronics](https://m.media-amazon.com/images/I/61G3J3CV5nL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: 9-pin RCA Output Cable Car Radio Video Audio Adapter Cable Car Stereo RCA Output Input Cable : Electronics
![Okay so my head unit only has 2 rca ports, and I have to use those to plug in rcas that's are connected to the wiring harness I got for my car. Okay so my head unit only has 2 rca ports, and I have to use those to plug in rcas that's are connected to the wiring harness I got for my car.](https://i.redd.it/pctugwbneps51.jpg)
Okay so my head unit only has 2 rca ports, and I have to use those to plug in rcas that's are connected to the wiring harness I got for my car.
![Amazon.com: ASC Car Stereo RCA Audio Video Wire Harness Plug for Select Pioneer/Premier 24 Pin Aftermarket DVD Nav Radio CDP1091, CDP1143 AVIC-D3 AVIC-F900BT AVIC-F90BT AVIC-F9115BT + More : Electronics Amazon.com: ASC Car Stereo RCA Audio Video Wire Harness Plug for Select Pioneer/Premier 24 Pin Aftermarket DVD Nav Radio CDP1091, CDP1143 AVIC-D3 AVIC-F900BT AVIC-F90BT AVIC-F9115BT + More : Electronics](https://m.media-amazon.com/images/I/51vVIAmh8WL.jpg)
Amazon.com: ASC Car Stereo RCA Audio Video Wire Harness Plug for Select Pioneer/Premier 24 Pin Aftermarket DVD Nav Radio CDP1091, CDP1143 AVIC-D3 AVIC-F900BT AVIC-F90BT AVIC-F9115BT + More : Electronics
![Tech Talk: Why are car audio manufacturers still using RCA interconnects for their hardware? - DD Audio Tech Talk: Why are car audio manufacturers still using RCA interconnects for their hardware? - DD Audio](https://ddaudio.com/wp-content/uploads/2020/01/C4-60-Z-wire-RCA-1200.jpg)