Can I just hook the red wire up to my vehicle's reverse trigger wire so it only receives 12v when the car's in reverse?

The camera seems to work just fine like this. If yours has an auto dimming or glare reduction it will require the +12 to go to an accessory powered circuit in order for that to work properly.

What button do you push to toggle between two cameras

There is no button to toggle. There are 2 inputs. Video, and Reverse. The reverse footage will come on any time that source gets input. Generally, you attach the reverse camera to your Reverse lights power, so the camera powers on(and in step, the screen) when you are backing up. When the reverse camera is on, you can press the power button on the mirror to turn on your "Video" input.

Le queda a una gmc sierra 2007

Si. Pero se requere electrosionita.

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Auto Adjusting Brightness LCD

Product ID: 44877358

Details

Auto Part Position
Rear
Brand
Master
Color
Mirror + LCD
Included Components
Rear View
Item Weight
2.35 Pounds
Item dimensions L x W x H
13.1 x 6.1 x

🔄Auto-adjusting brightness sensor

🔧Universal fit with included mounting bracket

🖥️4.3" high-brightness LCD screen

748.63 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚗 Upgrade your rearview game with smart clarity and universal style!

DUAL VIDEO INPUTS - Supports two RCA video inputs so you can connect multiple cameras for enhanced rearview coverage.
CRYSTAL CLEAR REFLECTION - 4mm thick anti-glare glass ensures distortion-free, sharp rear visibility.
SEAMLESS OEM REPLACEMENT - Perfectly replaces your original rearview mirror for a sleek, factory look.
SMART BRIGHTNESS ADAPTATION - Automatically adjusts LCD brightness to ambient light for optimal visibility day or night.
UNIVERSAL FIT EASY INSTALL - Includes universal mounting bracket compatible with most vehicles—installation is a breeze.

The Master Tailgaters 10.5" OEM Rear View Mirror integrates a 4.3" high-brightness LCD screen with auto-adjusting brightness and anti-glare 4mm thick glass. Designed as a full replacement mirror, it fits most vehicles via a universal mounting bracket and supports dual RCA video inputs for backup camera connectivity. Easy to install and engineered for distortion-free rear visibility, it elevates your driving safety and style.

Specifications

ASIN	B06XHQ1QXX
Auto Part Position	Rear
Automotive Fit Type	Universal Fit
Best Sellers Rank	#20,597 in Electronics ( See Top 100 in Electronics ) #40 in Car In-Mirror Mounted Video Players #78 in Automotive Interior Rearview Mirrors
Brand	Master Tailgaters
Brand Name	Master Tailgaters
Color	Mirror + LCD Screen
Compatible with Vehicle Type	Car
Customer Reviews	4.1 out of 5 stars 410 Reviews
EU Spare Part Availability Duration	2 Years
Fit Type	Universal Fit
Global Trade Identification Number	06932705332091
Included Components	Rear View Mirror, Cable Assembly, Cable Cover, ZipTie, Universal Mounting Bracket
Item Dimensions	13.1 x 6.1 x 3.1 inches
Item Weight	2.35 Pounds
Item dimensions L x W x H	13.1 x 6.1 x 3.1 inches
Lens Curvature Description	Convex
Manufacturer	Master Tailgaters
Manufacturer Part Number	MR-43-A1
Material	Glass
Material Type	Glass
Model Number	MR-43-A1
Mounting Type	Universal Mount
Operation Mode	Power
Other Special Features of the Product	Reverse Assist
Shape	Rectangular
Size	Non-Recording (Replacement Rear View Mirror)
Vehicle Service Type	Car

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748.63 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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