Good question!
My '08 didn't come with the little inner mirror backup camera display (2.4" from '09, 3.3" from '13), and have liked having the large double din display ever since installing a modern navigation head unit. To also keep the I/Mirror display would mean having two cameras, most likely.

In most cases, installing an aftermarket HU means installing its dedicated camera, as the tech has changed by leaps and bounds over the years making them rarely backwards compatible.
Also, in the case of the OEM camera, its connectors were proprietary (not the mini USB which aftermarket cameras have typically used). In that case, most of the time folks replace the OEM camera with the new one, and run a new shielded wire to it, as well.

Perhaps you could install a modern HU, and install its camera someplace out back, and leave the I/M system alone, in order to use both side by side?

 

Note that the JBL Head unit does not have an amplifier in it. The line level signals are sent by shielded cable to the subwoofer box in the rear cargo area, where there is a multi channel amp and those signals are then sent to the 6 speaker locations (dash, door and D-pillars). That amp cannot be turned on without special digital communication from the JBL HU.

So, if you change the JBL system be sure to get a Metra controller box (Crutchfield is a good source for all this stuff as they have got great after sales tech support) to be able to turn on the JBL amp in the sub with your new HU.

 

Note that the JBL Head unit does not have an amplifier in it. The line level signals are sent by shielded cable to the subwoofer box in the rear cargo area, where there is a multi channel amp and those signals are then sent to the 6 speaker locations (dash, door and D-pillars). That amp cannot be turned on without special digital communication from the JBL HU.

So, if you change the JBL system be sure to get a Metra controller box (Crutchfield is a good source for all this stuff as they have got great after sales tech support) to be able to turn on the JBL amp in the sub with your new HU.

Note that the JBL Head unit does not have an amplifier in it. The line level signals are sent by shielded cable to the subwoofer box in the rear cargo area, where there is a multi channel amp and those signals are then sent to the 6 speaker locations (dash, door and D-pillars). That amp cannot be turned on without special digital communication from the JBL HU.

So, if you change the JBL system be sure to get a Metra controller box (Crutchfield is a good source for all this stuff as they have got great after sales tech support) to be able to turn on the JBL amp in the sub with your new HU.

good info. Didn’t even consider the sub and amp since I don’t plan on upgrading speakers or sub.

 

They’ll all do that for the most part, you just need a y adaptor to feed it, that being said, why have the same image in 2 different places? Maybe do a front facing camera on the new screen and reverse in the mirror? ( since it’s natural to look in the mirror while reversing anyway)

 

That’s what I was thinking as well but didn’t know if it could work. I’m going to stereo shop Friday to have a talk and see what my options are but one way or another I’d like to keep a display up there and so does my wife. I guess I’ll know what’s possible Friday

 

Worst case you could add a second camera back there for the headunit.

I was going to use it as a front camera when I put an Alpine in, but came to find the camera that came with the unit was reversed image (for backup cam). I ended up putting it facing back at the front of my front tires, and another for a front cam.

 

And, just to add on to the conversation, there are "Multiplexers" available where you can connect multiple cameras 4, 6 etc. Front, back, left side, right side. One day, I'll place some discreet cameras near my mirrors to capture the left, right side.

 

I bought a Weivision 360 Birdseye 4 camera setup that I plan on installing and connecting to my Android HU.