Review on 12V DC Power Relay Capacitor Filter Rectifiers for Car Rear View Back Up Camera - Enhanced Aftermarket Camera by Marquez Hinshaw

I installed a backup camera on my BMW's trunk handle that uses a wireless transceiver. The transmitter recommended connecting it to the taillight power/ground, but due to the PWM POWER BMW uses, I didn't get a picture when the car was running. I bought it hoping it would fix the situation. Thankfully everything looks fine after installation. The camera and Wi-Fi aren't very high quality, so I still get some interference, but it was worth the trade-off as I didn't have to rip out some guts to route the cable to the main unit. Definitely worth the money.