Review on 👀 Enhance Your Driving Experience with Master Tailgaters 4.3" Auto Adjusting Rear View Mirror - Universal Fit by Jeremy Floyd

I bought this mirror for my wife's 2007 Tacoma, plus a rear door handle camera AND an extra glass for the front grille. I didn't quite understand how to use both cameras, although the mirror has 2 video inputs labeled "camera" and "video". The big question was how to switch between them. So I modeled everything like a dining table with 12V power supply to simulate a truck. Here's how it works. 1) Keep the mirror always on (+12V ACC) 2) It's ok to have the rear "backup camera" always on (+12V ACC) 3) The rear camera will always displayed in the mirror when the trigger wire is hot (+12V REV) 4) Power for the 2nd cam should be at the switch (I used a 2 position rocker switch used on the truck auxiliary lights used for the diff -Lock rocker fits Here is a truth table - if the front camera is not powered and the truck is not reversing, the mirror will show nothing - if the front camera is not powered and the truck is reversing, the mirror will show the rear camera – if the front camera is on and the truck is not in reverse, the mirror will show the front camera - if the front camera is on and the truck is reversing at the same time, the mirror will show the rear camera (YES, if both cameras are on at the same time are turned on, the rear camera overlaps the front one). Day camera is displayed) Note. The reason you need an extra switch to power the front camera is because if you keep the power on all the time, you will always see the front camera image in the mirror when the truck is not backing up, IE: just driving down the street. Hope this will be helpful for others