Locating wiring for reverse

reverse SW is always in or on the transmission
not shift levers the lie easy. and run over lids
yours just screws to the box.
the box knows what gear it is in best.
the service manual covers this,
the M/T box has switch named that. near the reverse shift rail/yokes
ford F350 stick shifted box m/T
just 2 pins(wires) here it is.

for Manual trans.; S5-42 ZF

https://www.rockauto.com/en/catalog/ford,1994,f-350,7.3l+v8+diesel,1126831,electrical-switch+&+relay,back+up+lamp+switch,4240

Troubleshooting Peak Wireless Backup Camera Monitor ...

https://www.etrailer.com/question-8083.html

Troubleshooting Peak Wireless Backup Camera Monitor LED Blinks but No ... Select Your Vehicle .... the blue light on the monitor blinks continuiously and I have no picture on the monitor? ... If so, it will only come on when the truck is in reverse. ... still blinking and you have no picture, then you need to look at the transmitter.

4UCam Backup Camera Test Cases

www.4ucam.com/backup_camera_tests.html

We do not have all different kinds of RVs, tailers and so on for the actual testing. ... for under 30 feet), the 8907T/8908T comes with a transmitter which is detached from the camera. You can fix the ... Wireless Car Backup Camera Series ... reverse gear, thereverse lights go out and the camera stops sending an image. At the ...

Most back up lamp sockets have just 2 terminals for a single filament lamp.

It's not unusual to have more than one wire per terminal. All wires that are connected to any one terminal are electrically the SAME - so it doesn't matter which you tap in to.

I can't tell from your photo if the brown wires all go to the same terminal (but I suspect with 99% certainty that they do), but you can always check the wires by running the engine, put it into reverse, set the parking brake and turn the engine off - but leaving the key on - while in gear (if you can't do this yourself - you'll need someone to put it in reverse and step on the brakes). The back up lights should be on. Use your tester to be SURE you have 12VDC between the GREEN and one of the BROWN wires. Use those two wires for your 12VDC supply circuit to the camera.

Either the camera is bogus or power is not getting to the camera when you throw the car in to reverse. Check the power line tap off for the camera- may be by the reverse backup lights..

It is located on the gear box check for broken cable.

The main active / positive you can pick up direct from a connection under the dash or from the fuse box. Its easy if you have a 12volt test light, you can locate a permanent or switched 12 volt when the ignition key is on. The viewer is usually always on when the ignition is on. The camera picks up power direct from the reversing light. Use a crimp connector or solder direct to the terminal which supplies power to the reverse lights. That way the only time the camera will operate is when the reverse lights are on. The tail and reversing lights usually have a common neutral or negative wire which is connected to the body of the car. The other wire is the one you want. That's the active wire that supplies power when reverse is selected.

on the gearbox will have a connector with 2 wire coming from it and the end of switch will have a nut shape so can be undone

"Life wire??" I don't know what you mean.
Usually, the backup camera will derive its power from the positive lead of your backup lights, so that it only turns on when you're backing up. You can use a standard wire tap to derive positive (+) from either backup light, and use chassis ground for the negative (-) lead of the camera.

the switch is on the gearbox ,i wouldnt even bother looking for the other end in the cab unless you find the loom running down one side at the front footwell and you can locate the colour of the wire in this big bunch ,unless of course that as this is a 2011 car it may not have a wiring loom as such but a bus line type system with a transistorised switch in the back like the new F type jag .Happy motoring and leave well alone is my advice

dear there are two type of gear box , old model reverse S.W on the middle of gear box front , another type came fix with shifting lever
shaft ,top of gear box down shifting cable , connect with small socket two wire