Qaoquda 3.5mm to RCA, 90 Degree Right-Angled 3.5mm 1/8″ TRRS Stereo Male to 3 RCA Female Jack Adapter Cable-8inch. … If you’re using a Fire stick with this, you will need to power BOTH devices. I used a dual micro USB splitter cable plugged into a 2 amp wall charger (the Amazon one won’t give enough juice for this). …
https://www.amazon.com/Converter-Composite-Adapter-Supports-Chromecast/dp/B08CH91V1W

