Electrical Mechanical

Backup Camera

Everyone needs one!

Modifying the cameras to get a backup camera working and have a camera view behind the vehicle while driving.

Rear three-quarter view of ambulance

When you have a vehicle this big, it’s a good idea to be able to see what is behind you!

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Only One Camera Working

Two cameras were installed in the rear of the vehicle.

One camera was inside the rear compartment showing the medical treatment area when the ambulance was running.

The other camera on the rear, which was supposed to show the view behind when the transmission was in reverse, was not showing anything on the camera.

The issue

I removed the ceiling cover inside the rear compartment to find the video cables. After switching cables and looking at the video monitor it was clear that the outside rear facing camera was not operational. Rather than replace it, I decided to move the interior camera to the outside. I didn’t need an interior camera, and the cameras were the same model, so swapping out the bad one for the good one inside was relatively easy. I new I would need some items to hook it up though because I needed to split the single feed from the camera into two feeds: one to the screen during driving and one to the screen when the vehicle transmission was in reverse.

Items I would need

Links above show the products on

Connecting The Cables

Camera cables in rear of ambulance before fixing

Single Camera to Dual Feeds

The single camera output s-video needed to be connected to the two s-video cables running back to the monitor near the driver.

Cable Splitter


This splitter would create two feeds from one source. The cable was one male input to two female outputs. As you can see above, this did not match the genders that I needed to make the connections. I had to purchase a female to female connector for the outside rear camera cable. Then I needed two separate male to male cables to connect the splitter female ends to the female monitor input cable connections.

Cable Connections Completed

Connections made and cables covered in heat shrink

Heat shrink plastic was placed over the connections as they were plugged together. I tested the connections by looking at the monitor output with the engine running in both park and reverse. I confirmed that in park and drive I was able to see the area behind the ambulance in the monitor. When I placed the vehicle in reverse, I was able to also see behind the ambulance. I heated the heat shrink to seal the connections and zip tied it back into the area above the ceiling cover.

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