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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics DIY Guides & Discussions DIY Install of InvisiHitch
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      03-11-2016, 05:31 PM   #1
Infamouscrew02
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Thumbs up DIY Install of InvisiHitch

One of my stipulations for owing a car is that it has to have the capability to pull a small aluminum trailer and a motorcycle. I race dirt bikes and often haul my street bike up to the Mountains to go carve some turns for a weekend.

The biggest gripe I have about putting a hitch on a car is the fact that you can see the tow bar hanging in the back. IMO it ruins the rear end of a car; its an unpleasant sight.

I found a company out of Atlanta, GA called Invisihitch http://www.invisihitch.com that provides exactly what I was looking for. I worked with Linsey and Steve, they were able to answer all my questions and give me 100% confidence in their product.

I figured there might be some others that were interested in a product like this and were intrigued on what it takes to install.


***DISCLAIMER*** I skipped some steps simply because the forums are already full of threads on how to accomplish certain tasks. No need to create another one. And of course, I accept no responsibility for others performing this DIY.****

First you start out by removing your rear bumper, brake lights, and pulling free the inner carpet of the trunk.



Remove the 13mm nuts that hold the exhaust brackets to the support beam (2 total, 1 on each side).



Remove the 18mm nuts from the bumper support beam (4 total, 2 on each side).





Remove the 3x13mm bolts that hold on the debris guard on the rear of the body.



Assemble the receiver to the hitch beam.





Torque to appropriate specs.



Install the mount for the trailer lights plug.



Install hitch in place of the bumper support, reinstalling the 18mm nuts.



With the supplied nuts and bolts, re-attach the exhaust hangers.



Next is the wiring harness.



I ran the harness through a body plug on the drivers side. I cut a small hole and pulled the wiring harness through making sure it was a tight fit to keep moisture out.



Mount the wiring harness computer with provided double sided sticky tape.



I also mounted the relay to a existing mount point that another device was mounted on and used double sided sticky tape to mount the fuse connection to the car as well, didn't want to hear anything bounding around as I drove. (No picture. Sorry)

Attach the positive wire to a positive terminal at the battery.



Now here is where it took some figuring out on my part. The wiring color scheme that Invisihitch provided was different on my car (13' f10 m-sport) so I had to figure out what wires did what.

Passenger side:
- Blue/Brown = Right Blinker
- Grey/Yellow = Tail Light
- Green/Grey = Brake Light

Driver Side:
- Blue/Green = Left Blinker
- Purple/Light Purple = Tail Light
- Green/Blue = Brake Light

Given that information I was able to attach InvisiHitch wiring harness and use the provided wire taps and connect the wiring harness to the vehicle. I then found a appropriate ground and attached the negative of the wiring harness to it.

I used a test light and tested each light output at the output end of the harness.

I found that one of the wires on the harness was switched. Yellow on the harness input which is supposed to be the left blinker, resulted in yellow being the right blinker at the output of the harness. Same went for the green wire of the harness; which was supposed to be the right blinker on the input. It ended up as the left blinker of the output of the harness.

With that in mind, I was able to make the appropriate corrections connecting the flat 4 connector for the trailer lights plug.

Now with the wiring completed and tucked away appropriately, I reinstalled the trunk carpet, tail lights and bumper. ****Notice you cannot see the hitch at all?!****



Here is were you have to do some cutting: In order to access the hitch, you need to cut a hole in the debris guard. I figured out exactly where I needed to have access in order to access the lights plug, locking mechanism and the release mechanism. Once you're finished trimming it appropriately, reinstall.



Here is a picture of the hitch receiver installed.



It is very stable and has very little play and it doesn't touch any part of the bumper trim. I am very impressed with this setup.

Ease of installation? I'd give it a 2 on a 1-10 scale. Fit is a 10. Ease of use is a 9; Being that the release mechanism is up in the bumper, its a little difficult to get to, but I could cut the debris guard hole larger to make it easier. I also ordered a 1 1/4" square tube receiver so that that I could use my Thule bike mount as well with the system.

The system cost is $548. Shipping for me was about $70 and I received it the very next day.

Like I said, Steve and Linsey were a pleasure to deal with so if you're interested give them a call at 678-400-0121

Any questions or comments, please don't hesitate to ask!
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      03-31-2016, 10:46 PM   #2
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Very nice! I didn't know this exists. This will be great for bikes!
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      03-31-2016, 10:47 PM   #3
Infamouscrew02
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And dirt bikes!
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      04-22-2016, 10:33 PM   #4
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And small boats!
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      05-06-2016, 03:32 PM   #5
M83
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I didn't see it mentioned, but do you have Comfort Access? I am curious if this would interfere with the system. (Foot activated trunk opening)
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      05-06-2016, 06:03 PM   #6
EL Jeffe 5
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Quote:
Originally Posted by Infamouscrew02 View Post
And dirt bikes!
Looking good
what wheels are those and size?
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      05-17-2016, 06:06 PM   #7
Infamouscrew02
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Quote:
Originally Posted by M83 View Post
I didn't see it mentioned, but do you have Comfort Access? I am curious if this would interfere with the system. (Foot activated trunk opening)
M83 With the receiver installed I've noticed that I can not get the foot activated trunk opening to work. With it uninstalled I have not noticed any interference. To be completely honest though, I rarely use that feature.

EL Jeffe 5 They are AXE Wheels 20"
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      08-05-2016, 11:32 PM   #8
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Quote:
Originally Posted by Infamouscrew02 View Post

It is very stable and has very little play and it doesn't touch any part of the bumper trim. I am very impressed with this setup.

Ease of installation? I'd give it a 2 on a 1-10 scale. Fit is a 10. Ease of use is a 9; Being that the release mechanism is up in the bumper, its a little difficult to get to, but I could cut the debris guard hole larger to make it easier. I also ordered a 1 1/4" square tube receiver so that that I could use my Thule bike mount as well with the system.

The system cost is $548. Shipping for me was about $70 and I received it the very next day.

Like I said, Steve and Linsey were a pleasure to deal with so if you're interested give them a call at 678-400-0121

Any questions or comments, please don't hesitate to ask!
Thanks for this post, will likely tackle it myself when I do an M rear bumper. Hard to tell from pics, would this work with an aftermarket diffuser? IE M5, 3d, Vorsteiner, etc
Their website has been trash for a few weeks now, I suppose I will call and make sure they are still around...
Matt
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      08-05-2016, 11:45 PM   #9
Infamouscrew02
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Quote:
Originally Posted by SchillerM
Quote:
Originally Posted by Infamouscrew02 View Post

It is very stable and has very little play and it doesn't touch any part of the bumper trim. I am very impressed with this setup.

Ease of installation? I'd give it a 2 on a 1-10 scale. Fit is a 10. Ease of use is a 9; Being that the release mechanism is up in the bumper, its a little difficult to get to, but I could cut the debris guard hole larger to make it easier. I also ordered a 1 1/4" square tube receiver so that that I could use my Thule bike mount as well with the system.

The system cost is $548. Shipping for me was about $70 and I received it the very next day.

Like I said, Steve and Linsey were a pleasure to deal with so if you're interested give them a call at 678-400-0121

Any questions or comments, please don't hesitate to ask!
Thanks for this post, will likely tackle it myself when I do an M rear bumper. Hard to tell from pics, would this work with an aftermarket diffuser? IE M5, 3d, Vorsteiner, etc
Their website has been trash for a few weeks now, I suppose I will call and make sure they are still around...
Matt
It does work with the aftermarket diffusers. May require a little trimming depending on which diffuser it is. I have a aftermarket diffuser and it didn't require any trimming.
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      08-08-2016, 08:41 AM   #10
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Very useful DIY. I was looking into getting an invisible hitch as well, this might do the trick. However, seems like you remove the bumper support beam and replace it with the hitch beam. I am not sure about that. I saw some other hitch kits (not invisible) that sandwich between the OEM beam and the car frame.

What do you think about the fitment and safety aspects of this? Would removing the OEM beam be a safety issue (or cause more damage) in the unfortunate case of being rear ended?

Thanks!
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      04-13-2017, 10:42 PM   #11
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Tasansal, you're exactly right. I installed this hitch on my 2014 328d xDrive, and I replaced the metal bumper over the hitch before torquing down the four nuts. I would not advocate just tossing the internal bumper.

Invisihitch is really a fantastic product. Last year, I towed a 2500 lb double axle U Haul trailer coast to coast with the Invisihitch -- 9000 miles in all including side trips. I had no trouble with the hitch itself. I did hit an ice block during a snowstorm which tore out the trailer wire, but fortunately it was U Haul's part that needed replacement.

The hitch got me from Seattle to Cape Hatteras to Boston and back to Seattle. I wouldn't use any other hitch on a BMW.
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