[onlysublime]

I have no idea what kind of forum to post this so I picked this one. I bought a 4-camera system for my BMW 328i 2007 E90 because my previous reverse backup camera system broke. Both my backup camera system and my new 4-camera system are third-party systems (not BMW). It was my fault for the first camera system breaking.

The rear camera was easy to replace and I just replugged the new camera into the previous wiring I had where it is connected to the reverse light wire via a T-Tap adapter. So when I put it in reverse, it sends power to the camera and I can see the camera view.

However, I'm wondering how to power up the other cameras. I want to at least put one in the front. And I want an option to leave it on. The controller screen lets me do that as long as the camera is powered. This system has a lot of cool things like I can record the cameras to an SD card. I can see 2 cameras at once or 4 cameras at once or I can cycle through the cameras. But I have no idea how to provide power to the other 3 cameras.

[Serf27]

Pull power for the frm wire that feeds the reverse light.
And run that wire to each camera, it would only be on when in reverse.
If you want a camera constantly on, you need to find a wire powers up when the car turns on.

[onlysublime]

Hi, thanks for the reply!

So I searched FRM. So this refers to the BMW Footwell module (FRM)? Do I open this box?

[Serf27]

Yes, the module on the drivers side footwell.
You don’t open it, you just find the wire that sends power to the reverse light.
It may be a black/violet wire or a black/blue wire.

[onlysublime]

Thanks so much!

So I was thinking... If I connect a front camera to the daytime running lights line, then the front camera would run all the time when driving and if I turn on the headlights for nighttime, the camera would then turn off. Sound reasonable?

So am I running the power line to the footwell area and then connect to that line? or is there an area I can do under the hood?

[Serf27]

That should work.
You can tap into the drl wire. Just add an online fuse right after you pull power.