Backup camera tie in to taillights

[ABQ-Jammer]

I got a cheap backup camera from eBay, which only came with 3 wires; power, ground, and to hook into the reverse circuit.  I used a 4-pin trailer connector to tie into the power and ground, and used a splice to attach to the green wire for the reverse bulb in the driver's side taillight, but the camera still isn't working.  The camera is supposed to work with my cell phone, and I have the app installed, but it's not seeing the camera.  Did I tap into the wrong wire?  I thought the green or light green was the power for the reverse bulb, though there are 3 wires going to it, and the other two look black.  I would really like to get this working, so any help would be greatly appreciated.

[David89GMC]

4 hours ago, ABQ-Jammer said:

I got a cheap backup camera from eBay, which only came with 3 wires; power, ground, and to hook into the reverse circuit.  I used a 4-pin trailer connector to tie into the power and ground, and used a splice to attach to the green wire for the reverse bulb in the driver's side taillight, but the camera still isn't working.  The camera is supposed to work with my cell phone, and I have the app installed, but it's not seeing the camera.  Did I tap into the wrong wire?  I thought the green or light green was the power for the reverse bulb, though there are 3 wires going to it, and the other two look black.  I would really like to get this working, so any help would be greatly appreciated.

The four wire connector doesn't have a backup signal.

Connect directly to the reverse light nearest the wires to the camera.

A link to the ebay listing would be helpful for the cell phone signal.

[ABQ-Jammer]

3 hours ago, David89GMC said:

The four wire connector doesn't have a backup signal.

Connect directly to the reverse light nearest the wires to the camera.

A link to the ebay listing would be helpful for the cell phone signal.

I originally thought the 4 wire connector would have it, but it doesn't, so I just connected to the power and ground on that connector, and tapped directly into the taillight wire for the "trigger", but it's not working.

Let me see if I can find the listing for the camera.  Here it is:

https://www.ebay.com/itm/304604059127?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=qrg6lcdtsky&sssrc=2349624&ssuid=t0K5rCObQyK&var=&widget_ver=artemis&media=COPY