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      05-27-2020, 10:49 AM   #45
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Quote:
Originally Posted by BdleyHT View Post
This has been a helpful discussion thread. It's given me the confidence to try towing a 23ft airstream with my new x7 40i. The trailer is 6,000 GVW and estimated 700 lbs hitch wait, but seems like with a WDH I think I should be fine. Am I crazy? I have the factory installed hitch and m brakes. The manual says 600 lbs for hitch wait. I ordered the Curt echo wireless brake controller.

I also have a 2011 x5 d, which I've only used to tow a light hobie cat, but it sounds like it's pretty capable of towing more based on this discussion thread. It doesn't have the air suspension so I imagine I need to be careful with hitch weight for it.
I'd be worried about exceeding the rated tongue weight. I wouldn't be surprised if your tongue weight is close to 800-900 lbs with a fully loaded rig. An extra 50 lbs probably wouldn't hurt, but +200-300 could do some damage long-term.

I have read of reports from Airstream owners that have reported 1,200lb tongue weights. Check Airforums if you haven't already.
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      05-27-2020, 03:35 PM   #46
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Thanks. Most airstream user group posts are in the 500-700 lbs range for the 23ft airstream tongue weight.
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      05-27-2020, 05:08 PM   #47
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I had a question regarding the trailer 7-pin connector. My truck and LX570 work great with my boat trailer. However, when I hook up the X7 (with the factory hitch and tow pack), none of the lights work in the same way. (I.e., they are illuminating, but not "correctly"). Does anyone know if the X7 factory trailer 7-pin connector uses a European or some other standard for the lights (as opposed to the normal US wiring standard: (i) White = Ground, (ii) Blue = Brakes, (iii) Brown = Tail Lights, (iv) Red = Charging, (v) Yellow = Left Turn/Stop, (vi) Green = Right Turn/Stop, (vii) Center = Backup Lights).
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      05-27-2020, 08:40 PM   #48
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Quote:
Originally Posted by SRL311U View Post
I had a question regarding the trailer 7-pin connector. My truck and LX570 work great with my boat trailer. However, when I hook up the X7 (with the factory hitch and tow pack), none of the lights work in the same way. (I.e., they are illuminating, but not "correctly"). Does anyone know if the X7 factory trailer 7-pin connector uses a European or some other standard for the lights (as opposed to the normal US wiring standard: (i) White = Ground, (ii) Blue = Brakes, (iii) Brown = Tail Lights, (iv) Red = Charging, (v) Yellow = Left Turn/Stop, (vi) Green = Right Turn/Stop, (vii) Center = Backup Lights).
Not sure what to tell you other than to make sure your connector on your trailer is clean so that you have a proper electrical connection with the plug. I did a test connection with my trailer and X7 and all of my lights functioned properly.
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      05-27-2020, 10:27 PM   #49
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Quote:
Originally Posted by SRL311U View Post
I had a question regarding the trailer 7-pin connector. My truck and LX570 work great with my boat trailer. However, when I hook up the X7 (with the factory hitch and tow pack), none of the lights work in the same way. (I.e., they are illuminating, but not "correctly"). Does anyone know if the X7 factory trailer 7-pin connector uses a European or some other standard for the lights (as opposed to the normal US wiring standard: (i) White = Ground, (ii) Blue = Brakes, (iii) Brown = Tail Lights, (iv) Red = Charging, (v) Yellow = Left Turn/Stop, (vi) Green = Right Turn/Stop, (vii) Center = Backup Lights).
Mine all works fine from the factory running through a curt brake controller.
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      05-30-2020, 11:15 AM   #50
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Any recommendations for x7 mirror extenders?
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      05-30-2020, 08:10 PM   #51
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Another X7 towing configuration... Was doing some initial fit testing of my rig today and prepping for some trailer maintenance. I also wanted to get a good idea of the tongue weight before I did a road test, to find that "sweet spot" on my trailer for my M3. But none of my local stores had any old school mechanical bathroom scales so I could get some tongue weight measurements .....

For anyone who is curious, the weight of my rig when fully loaded, which also includes three 5-gallon fuel jugs mounted in front of the tool box (not shown) and tools, is approx 6000 lbs. The car trailer is an open deck, 18ft steel trailer. I added the tire rack several years later, which is also made of square steel tubing. And while I have not done a fully loaded road test yet, just parked the X7 seemed to level everything out. My hitch has weight distribution and sway control, which I also intend to use when hauling the trailer fully loaded (not needed when empty though, hardly feels like there is anything back there when not loaded).

I also have the Curt Echo Brake controller, as mentioned above. Works great and it is nice to not need to install/wire an aftermarket brake controller.





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Last edited by jmciver; 05-31-2020 at 12:02 PM..
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      06-12-2020, 03:24 PM   #52
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So for those of you using the Curt Echo brake controller, have any of you had issues with the controller not staying properly connected while driving? I did my first "extended" road test today on the highway with an empty trailer - it was only about 30 miles. All was well for most of the drive, however after going over a few bumps on the highway, I got a brake light fault/error on iDrive. I also received a "trailer disconnected" message on my iPhone from the Curt Echo app. I had seen this before when I did some initial testing. I assumed it was due to some of my trailer lights malfunctioning (they were old with some dead LEDs). I installed new LED tail lights and parking lights on the trailer and all was well with no errors following a successful retest while parked.

Today, before my short trip, I hooked everything up and did all my normal pre-underway checks for the trailer. All lights worked as expected. One thing I don't like about the Curt Echo controller is that the controller does not feel as "solid" when connected to the X7 - there is definitely some wiggle. When I got to my destination, firmly pressing the Curt Echo controller into the socket cleared the errors. So I think my suspicions are correct about the Curt Echo not making a solid connection in the socket.

Anyone else with this issue? I might have to come up with a way to keep the Curt Echo controller more snug in the X7 connector. Shouldn't be too hard to come up with something, but I am still thinking about that one...
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      06-14-2020, 10:02 AM   #53
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mine is pretty tight.

I think when the car notifies of a trailer light failure, its reading the voltage to the trailer pins.

Makes sense that if the voltage dropped due to a disconnect, the car would see that as a light going out.

I haven't experienced that issue.
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      06-14-2020, 11:32 AM   #54
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I added some cloth tape around the end of the controller that plugs into the X7 side in order to get a tighter fit in the socket - seems to have worked. I may try the same of my trailer plug as well (don't have my trailer with me at the moment to test). The simplicity of this setup is great (I really like it and will continue to use it), but the weight of the trailer plug on the end of the controller, combined with the length of the controller could be a bit more sturdy if some type of bracket/brace could be implemented - still trying to think up some ideas on that one....
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Last edited by jmciver; 06-14-2020 at 12:02 PM..
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      06-21-2020, 10:30 AM   #55
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Quote:
Originally Posted by plumcrazy View Post
Yup, love the jetboat! Here are some pics of the cables.

Full towing review of 7000lb RV (6200 dry)

I have the Curt Echo brake controller, worked great on 8 hours round trip driving. Does seem like slight delay from pressing break until RV/camper pulls, but works fine.

I have a Furrion observation camera on back of RV. Would go on for a sec, off for 3, continous loop -worked perfectly with my f150. called furrion - they said german cars put out like 10 volts not the full 12. so they sent me a prototype cable (you can see in pic), fixed the problem - and also felt like brakes more responsive too

towing under 50 mph was awesome, engine quite, tons of pull, great stopping power, no sway, was really nice - better than f150 v8. towing at 65MPH - wasn't a big fan. lots of sway, when car/truck flies by faster would drift a lot, definatley can't just chill while driving. using 9 chain lenghts on the weight distribution hitch.

going to do closer camping trips more often - if longer ones, may rent a F250/2500 truck to pull the camper.

again per my previous post, towing 4500/5000 lb boat - was awesome, better than truck.
Thanks for the great information! Do you know if there is a way to get access to this cable (other than through Furrion)? Mine won't connect at all and I didn't have any issues with it before.
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      07-14-2020, 09:55 AM   #56
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If anyone else is looking, I finally received a response from Furrion. Here is the link to the cable you need for the camera to work:

https://furrion.com/collections/all-...h-power-switch

Now just have to wait until it is in stock...
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      09-21-2020, 09:33 PM   #57
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Has anyone installed a brake controller via wiring? Is the X7 really prewired?
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      09-21-2020, 09:58 PM   #58
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Quote:
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Has anyone installed a brake controller via wiring? Is the X7 really prewired?
I'd like to know this as well.
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      09-21-2020, 11:30 PM   #59
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Quote:
Originally Posted by bagekko View Post
Has anyone installed a brake controller via wiring? Is the X7 really prewired?
There is a distinct possibility it might be pre-wired. During my research on brake controllers, I found a thread over on the G05 forum where owners found wires under the dash on the driver side for a brake controller. They then installed the BMW brake controller (just a rebranded popular brake controller brand, I forget which though), after purchasing a few OEM harness plugs. Based on the similarities between the X5 and X7, seemed logical that the X7 could also be pre-wired.

Seemed pretty straight forward, and I was ready to give it a try. But after I saw the Curt Echo model, I did not feel the need. Also, even if the wiring is behind the dash of the X7, at the time of my research, BMW did on officially support a wired brake controller retrofit for the G05/G07, at least not in the US. Of course, doing things BMW has not officially supported does not necessarily mean much if it still works...
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      09-21-2020, 11:41 PM   #60
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Quote:
Originally Posted by jmciver View Post
There is a distinct possibility it might be pre-wired. During my research on brake controllers, I found a thread over on the G05 forum where owners found wires under the dash on the driver side for a brake controller. They then installed the BMW brake controller (just a rebranded popular brake controller brand, I forget which though), after purchasing a few OEM harness plugs. Based on the similarities between the X5 and X7, seemed logical that the X7 could also be pre-wired.

Seemed pretty straight forward, and I was ready to give it a try. But after I saw the Curt Echo model, I did not feel the need. Also, even if the wiring is behind the dash of the X7, at the time of my research, BMW did on officially support a wired brake controller retrofit for the G05/G07, at least not in the US. Of course, doing things BMW has not officially supported does not necessarily mean much if it still works...
Wow, I hadn't heard of the Curt Echo model, thanks for that!

Pretty sure the BMW controller is a rebranded Tekonsha model, and not even a high-end one, at that.
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      09-22-2020, 05:12 AM   #61
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Quote:
Originally Posted by Wild Blue View Post
Quote:
Originally Posted by jmciver View Post
There is a distinct possibility it might be pre-wired. During my research on brake controllers, I found a thread over on the G05 forum where owners found wires under the dash on the driver side for a brake controller. They then installed the BMW brake controller (just a rebranded popular brake controller brand, I forget which though), after purchasing a few OEM harness plugs. Based on the similarities between the X5 and X7, seemed logical that the X7 could also be pre-wired.

Seemed pretty straight forward, and I was ready to give it a try. But after I saw the Curt Echo model, I did not feel the need. Also, even if the wiring is behind the dash of the X7, at the time of my research, BMW did on officially support a wired brake controller retrofit for the G05/G07, at least not in the US. Of course, doing things BMW has not officially supported does not necessarily mean much if it still works...
Wow, I hadn't heard of the Curt Echo model, thanks for that!

Pretty sure the BMW controller is a rebranded Tekonsha model, and not even a high-end one, at that.
It is discussed further up in this thread ...

But here is the BLUF: Wireless, easy integration with your cell phone, works very well and is reasonably priced. Highly recommended.

About the hardest thing I had to do was figure out a way to mount my cell phone in my X7 while towing that didn't drive my OCD nuts (since I am not a fan of cell phone mounts for cars). I ended up getting a cheap cup holder cell phone mount that works well enough, and fits in the glove box when I am not towing.
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      09-22-2020, 07:03 AM   #62
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Has anyone tried either of these? A Curt Spectrum -https://www.curtmfg.com/part/51170, or a Redarc Tow Pro Elite - https://redarcelectronics.com/produc...ake-controller ? They are similar in design, you mount a control knob in the dash or console. You adjust the braking force by turning the knob, and can apply the brakes manually if needed by pressing a button. You do have to drill a hole or two, but I don't care about that. It looks like a clean installation, no controller hanging under the dash, and leaves your phone free to be a phone. If there is a factory / OEM brake controller harness under the dash, it should be a fairly easy install.
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      09-22-2020, 09:01 AM   #63
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The bad reviews of the curt echo wireless have scared me from it. In 2 weeks towing a trailer with a car & stuff from RI to UT.
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      09-22-2020, 01:37 PM   #64
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Quote:
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The bad reviews of the curt echo wireless have scared me from it. In 2 weeks towing a trailer with a car & stuff from RI to UT.
Those of on here that have it have had good success with it, including myself. Only issue I had with it initially was an intermittent electrical connection with my trailer. Turns out the 15 year old 7-pin connector needed to be replaced. After that, no issues. When doing my research, I did not see any noteworthy negative reviews that were enough to scare me away (several negative ones seemed like operator error or other throw away negative reviews). I recommend it if you don't want to run wires/put holes in your X7.
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      09-22-2020, 07:32 PM   #65
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Over at Amazon there were a lot of bad reviews, not that I take Amazon reviews that seriously, the quantity was what made me think.

Quote:
Originally Posted by jmciver View Post
Those of on here that have it have had good success with it, including myself. Only issue I had with it initially was an intermittent electrical connection with my trailer. Turns out the 15 year old 7-pin connector needed to be replaced. After that, no issues. When doing my research, I did not see any noteworthy negative reviews that were enough to scare me away (several negative ones seemed like operator error or other throw away negative reviews). I recommend it if you don't want to run wires/put holes in your X7.
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      09-22-2020, 07:35 PM   #66
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There's a lonely 4 pin connector underneath the steering wheel lower dash cover, looks like it may be for the brake controller. Considering I have almost every option possible, not sure what else it could be for. Not a great picture but didnt have much time to grab a good light.

Quote:
Originally Posted by jmciver View Post
There is a distinct possibility it might be pre-wired. During my research on brake controllers, I found a thread over on the G05 forum where owners found wires under the dash on the driver side for a brake controller. They then installed the BMW brake controller (just a rebranded popular brake controller brand, I forget which though), after purchasing a few OEM harness plugs. Based on the similarities between the X5 and X7, seemed logical that the X7 could also be pre-wired.

Seemed pretty straight forward, and I was ready to give it a try. But after I saw the Curt Echo model, I did not feel the need. Also, even if the wiring is behind the dash of the X7, at the time of my research, BMW did on officially support a wired brake controller retrofit for the G05/G07, at least not in the US. Of course, doing things BMW has not officially supported does not necessarily mean much if it still works...
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