So in other words when the switch is in position #1, the backup camera works like it does from the factory, only when the transmission is in reverse. If the switch is in position #2, it will work anytime and it does not matter what position the transmission is in.
My method is a simple variation of the original modification created by Aalders. He put the switch up high above the rear view mirror. With my method the switch is on the dash. That is the only difference between the two methods.
Thanks to Lurkin, PSU_Taco_85, and caribe makaira for checking my work on the electrical diagram. It's nice to have help.
What makes this mod possible is that the camera wiring has a junction point behind the coin tray which makes tapping into it super convenient for adding a switch on the dash.
Here are the basic steps.
- (1) x SPDT switch
- (3) x pieces of 10" hookup wire
- (3) x Male slide connectors
- (3) x Female slide connectors
- (1) x Add-a-circuit with appropriate ATM fuse (3 amp) and matching ATM fuse for the one you replace in your truck. The trucks OEM fuses are low profile and incompatible with the add-a-circuit product. Hard to explain in a few sentences, but clear when you get one.
- Some heat shrink to protect the switch terminals.
Gather your supplies and solder the harness to the switch terminals. I used a Single pole Double Throw switch (SPDT), it has three terminals. The terminal in the middle is T2 and that needs to go to the camera; in my photos I used yellow wire for that. T1, and T3 will either to go the REV wire or your add-a-circuit, and it does not matter which one goes where provided that you made T2 go to the camera. I used red wire for T1 and T3.
I wanted to protect my harness with some split-wire loom.
Removed coin tray and find a suitable location for switch
Find connector IN1
Your connector may look different and have fewer wires in it!!! My connector is full because of the accessories (Bluetooth) that came with my truck from the factory.
The red wire going into IN1 is the one you need to cut and wire up as he showed.
[PICTURED IN THIS QUOTE IS THE IN1 CONNECTOR FROM a 2012 sr5 with stock audio, no entune. Hope this helps. I had to use a multimeter amd just held my breath when I cut that wire.
It is the red wire angling downward.
Find the Rev Wire pictured below OR See PIC ABOVE DEPENDING ON YOUR TRUCK'S ACCESSORIES.
Remove factory insulation and cut the Rev wire and add slide connectors.
Install switch and route harness
If you use the same location for the switch, make your harness about 14" in length so you have ample wire, trim as necessary.
Installed SPDT switch
Finished connecting the slide connectors
NOTE: Read the instructions that came with your Add-a-circuit. You can't simply select an empty fuse slot--it will have no power. You must choose a fuse to unseat and put the Add-a-circuit in there.
After testing the modification, I made it nice and neat