The good news is the 5th gen hitch installs are practically identical to the 4th gen installs.
I ordered a Hidden Hitch class 3, 2" receiver (87568) along with the lighting module (118467) from CarID for $178 shipped.
I decided to pull the bumper to avoid drilling the frame.
I put the car up on ramps for more working room.
Lots of plastic pieces to take off first. I started with the wheel arches. There's one screw towards the back of the car, and then 4 metal clips.
You just push the metal clips off with a screwdriver.
Then comes the mud guards. They're held on with 3 screws in the wheel well, plus one trim clip on the bottom, and one clip in the inside of the wheel well. That last one is in an awkward position to get to.
Next the tail lights - A quarter turn with a screw driver will pop out these clips. There is a single plastic catch in the middle of the cover. You have to depress it to get it to come out cleanly.
With the cover gone you can unbolt the tail light housings. Two 10mm bolts hold the tail lights in. After you remove the bolts, slide the tai light housing straight back.
Remove bulbs and connectors. A quarter turn removes the bulbs and one harness you just depress the tab. Remember to unhook the cable bundle from the channel first.
Tail lights gone.
Pop open access door for the bumper bolts. There's two. One on each side. Remove the lone bolt.
The bumper is held on with trim clips on the bottom of the car. 3 on the back and then 2 on each side. In my case, I had to remove the bottom trim clip of the mud flap before I could get to the last one for the bumper.
One more small clip hiding in the top. This is a weird one. It sits flush, so in order to release it you have to take something pointy and push it in even further. You'll hear it pop open and then it comes out easily.
Start pulling the bumper. Now that all the clips are gone, you can start pulling on a side. The outback bumper came off pretty easily compared to other vehicles I've done this on. I switch between left and right popping clips free.
The motion is up and out.
You'll see where the clips are engaging closer to the center of the vehicle. The last row which is right below the gate latch, took a bit more force than the sides. Still comes out the same way.
Car is starting to look a bit more naked.
This is all so we can get access to the frame rails, so we can feed the hitch bolts through the opening and avoid drilling the frame.
The bumper bar is hold on by 8 nuts, 4 on each side. The studs are part of the frame.
I used a deep socket (no extension) on a 3/8" ratchet.
Odd - one of the studs became cross threaded as I was removing the nut. This was annoying to find out. I ended up cleaning it and the nut up with a tap and die.
With the bumper bar gone, time to focus on the mufflers. In my case I decided to remove both mufflers to have more working space. The mufflers are hanging from 2 rubber hangers.
Unbolt the muffler from the midpipe first. There are 2 bolts for each muffler. 14mm for bolt and nut. You'll need something to hold the bolt while you turn the nut. Another ratchet or wrench.
Here's the second hanger. Best way to remove these is spray them with soapy water. I tried lubricating oil and WD-40 first, but those just got my hands oily. I forgot that soapy water works wonders for mounting tires as well.
If you get them soapy they slide right off. For each side, completely remove the rubber hanger closest to the frame rail. If you don't, the hitch won't be able to mount as the rubber hanger can't fit through the slot.
Mufflers in their natural habitat.
With the mufflers gone, it's time to remove the heat shield. 4 small bolts hold the heat shield on. Remove both left and right side.
Finally a clean work space. It's time to put the hitch on.
Here's the hardware that came with the hidden hitch. The hitch mounts with 4 bolts to the car's frame. The bolts closer to the front of the vehicle used the larger pieces of metal as well as a set of flat washers.
The bolts closer to the rear of the vehicle used the smaller metal pieces and no flat washers. Just the conical washers.
I taped the bolts to the metal jam blocks. I then taped it to a crowbar to push it into the frame and get it seated properly.
Hitch is loosely bolted here.
Here's what the hitch looks like. Pretty standard.
The last piece is now trimming the heat shield(s). Here's one of the heat shields prior to trimming.
Here's the same heat shield after the corner has been cut out to make room for the hitch mounting bolt.
Now just put the pieces back in reverse order.
Installing the light module was stupid simple. Remove the foam and plastic panels in the back so you can get to the driver rear quarter panel. There's one tie down right behind the rear seats. Unbolt it and you will find a wire harness behind it that's wrapped in blue tape. Cut the blue tape and then pull the harness down so you can attach the light module to it. Tuck it in the back and put the panels back. Done.
Now to go rewire my trailer lights...
Have added some more photos of the car back together with trailer attached
I ordered a Hidden Hitch class 3, 2" receiver (87568) along with the lighting module (118467) from CarID for $178 shipped.
I decided to pull the bumper to avoid drilling the frame.

I put the car up on ramps for more working room.

Lots of plastic pieces to take off first. I started with the wheel arches. There's one screw towards the back of the car, and then 4 metal clips.

You just push the metal clips off with a screwdriver.

Then comes the mud guards. They're held on with 3 screws in the wheel well, plus one trim clip on the bottom, and one clip in the inside of the wheel well. That last one is in an awkward position to get to.

Next the tail lights - A quarter turn with a screw driver will pop out these clips. There is a single plastic catch in the middle of the cover. You have to depress it to get it to come out cleanly.

With the cover gone you can unbolt the tail light housings. Two 10mm bolts hold the tail lights in. After you remove the bolts, slide the tai light housing straight back.

Remove bulbs and connectors. A quarter turn removes the bulbs and one harness you just depress the tab. Remember to unhook the cable bundle from the channel first.

Tail lights gone.

Pop open access door for the bumper bolts. There's two. One on each side. Remove the lone bolt.

The bumper is held on with trim clips on the bottom of the car. 3 on the back and then 2 on each side. In my case, I had to remove the bottom trim clip of the mud flap before I could get to the last one for the bumper.

One more small clip hiding in the top. This is a weird one. It sits flush, so in order to release it you have to take something pointy and push it in even further. You'll hear it pop open and then it comes out easily.

Start pulling the bumper. Now that all the clips are gone, you can start pulling on a side. The outback bumper came off pretty easily compared to other vehicles I've done this on. I switch between left and right popping clips free.
The motion is up and out.

You'll see where the clips are engaging closer to the center of the vehicle. The last row which is right below the gate latch, took a bit more force than the sides. Still comes out the same way.

Car is starting to look a bit more naked.

This is all so we can get access to the frame rails, so we can feed the hitch bolts through the opening and avoid drilling the frame.
The bumper bar is hold on by 8 nuts, 4 on each side. The studs are part of the frame.
I used a deep socket (no extension) on a 3/8" ratchet.

Odd - one of the studs became cross threaded as I was removing the nut. This was annoying to find out. I ended up cleaning it and the nut up with a tap and die.

With the bumper bar gone, time to focus on the mufflers. In my case I decided to remove both mufflers to have more working space. The mufflers are hanging from 2 rubber hangers.
Unbolt the muffler from the midpipe first. There are 2 bolts for each muffler. 14mm for bolt and nut. You'll need something to hold the bolt while you turn the nut. Another ratchet or wrench.

Here's the second hanger. Best way to remove these is spray them with soapy water. I tried lubricating oil and WD-40 first, but those just got my hands oily. I forgot that soapy water works wonders for mounting tires as well.
If you get them soapy they slide right off. For each side, completely remove the rubber hanger closest to the frame rail. If you don't, the hitch won't be able to mount as the rubber hanger can't fit through the slot.

Mufflers in their natural habitat.

With the mufflers gone, it's time to remove the heat shield. 4 small bolts hold the heat shield on. Remove both left and right side.

Finally a clean work space. It's time to put the hitch on.

Here's the hardware that came with the hidden hitch. The hitch mounts with 4 bolts to the car's frame. The bolts closer to the front of the vehicle used the larger pieces of metal as well as a set of flat washers.
The bolts closer to the rear of the vehicle used the smaller metal pieces and no flat washers. Just the conical washers.

I taped the bolts to the metal jam blocks. I then taped it to a crowbar to push it into the frame and get it seated properly.

Hitch is loosely bolted here.

Here's what the hitch looks like. Pretty standard.

The last piece is now trimming the heat shield(s). Here's one of the heat shields prior to trimming.

Here's the same heat shield after the corner has been cut out to make room for the hitch mounting bolt.
Now just put the pieces back in reverse order.
Installing the light module was stupid simple. Remove the foam and plastic panels in the back so you can get to the driver rear quarter panel. There's one tie down right behind the rear seats. Unbolt it and you will find a wire harness behind it that's wrapped in blue tape. Cut the blue tape and then pull the harness down so you can attach the light module to it. Tuck it in the back and put the panels back. Done.
Now to go rewire my trailer lights...
Have added some more photos of the car back together with trailer attached


