Keenso Car Rear View Rectifier for Germany/American Car Series, 12V DC Power Relay Capacitor Filter Connector for Backup Camera Rectifier Auto Car Camera Filter Light Modification

Worked like a charm. Original reverse camera was unusable as the picture was blinking in and out. More out than in. This settled it down straight away. It was was not a solid picture but the slight shimmer that was left was much better and I was able to see the picture on the screen instead of having to try and wait for a slower blink to see what was behind me.

The Keenso Car Rear View Rectifier is a solid little upgrade that solved the flickering and weak reverse lights on my vehicle! Installation was straightforward — the 12 V plug‑and‑play design fit right in with my backup light wiring without any complex wiring changes. Once installed, my reverse lights are steady and bright, with no more flicker or dimming when other accessories are running. The relay and capacitor filter feel well made and durable, and I appreciate that it’s designed to work with a wide range of German and American car models. It’s compact but effective, and it gives me confidence that the backup lights are getting a cleaner, more stable power supply. Overall, this rectifier/relay filter unit delivers excellent performance and value. If you’re dealing with reverse light issues, this is a simple fix that really works — highly recommended!

Just installed a backup camera on my bmw 325i and got this product because I wasn't getting a signal, but it worked in the run postion and the camera had lights that were also on. After installing this, it didn't fix my problem at all, and now my camera doesn't even get power anymore. It isn't even well put-together, nor is it really anything. This is literally just a 1000 micro farad capacitor as well. Waste of time and money.

I installed a backup camera I bought on Amazon. The camera didn't work and research showed that I needed this rectifier. I have a 2013 Mercedes GLK 350. Once I installed this the backup camera worked perfectly. Highly recommended

Had to bubble gum from factory setup, used oem camera and third party viewing mirror. Same mirror works great in other vehicle. But this one has a blurry picture. Picture is still blurry some, but think it did help some. Cannot say much pro or con about it, since issue could be the long wiring I used and second relay board.

I installed some LEDs and they interfere with the backup camera. This rectifier solved my issue. Camera's crystal clear now.

Used this to install backup camera and tap into reverse light. Works as it should.

I installed this item on my 2010 Mercedes C300 (W204) to help me get an image from my aftermarket backup camera. It did provide a crystal clear picture, but only intermittently and then only for a few seconds. It's so frustrating. The wiring on the camera somehow picks up interference from the car rendering a low quality, flickering image which actually may or may not show on our display. After researching on Google I learned about these noise filtering devices. As I said, they work but in this case the effectiveness was very limited. I don't know what is it about this one that does not hold the image. It shows a clear image but only sometimes. After a few seconds I start seeing random lines, and then the image disappears altogether. Is it because of this particular brand? Is it the one particular unit I bought that is defective? I don't know. In the near future I'm going to try two things: First I will rewire the power to the camera from the back up light to a single fuse. I'm hoping that that may reduce the amount of interference that the wiring is picking up. If that doesn't work, I will buy a different noise filtering device. This one looked particularly cheapy. I opened the device and the few electronic items inside just look flimsy and poorly put together. So may be the whole problem is quality control.