I just bought and installed the A-118C. Same one as another member here mentioned and Techmoan on Youtube gave a pretty good review on it. There's a few sellers of the A-118C. Just make sure you get the capacitor version and not the battery one. Batteries fail, especially in the heat.
I also bought a Samsung MicroSD card ($10), and an Add a fuse ($6) (to tap one of my fuses). If I had a powered mirror I would have use that; way easier and cleaner.
One thing I forgot to get and bought for $8 at harbor freight was some plastic trim removal pieces. I highly recommend these for routing the wire.
https://www.amazon.com/Spy-Tec-A118-...keywords=a118c