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The P2 and P3 are functionally identical. The P3 has a better screen and enhanced diagnostics. Both units can be mounted at any angle (the P2 manual shows the same picture as the P3 manual!). I am using the P3 for new installations because it only costs a few dollars more, but there is really...

I would not rely on insulation-displacement connectors for the brake controller output lines. A two-axle trailer can draw 15-16A of current on this line, and a three axle trailer can easily exceed 20A. The Tesla part of the harness uses the equivalent of 16 AWG wire, and depending on the type...

It is critical that the trailer brake controller be firmly affixed to the car, as it needs to be able to correctly sense the deceleration. There is also a requirement that it be mounted facing the direction of travel; for the P2 it is +/- 20˚ in roll from level and +/- 20˚ from facing forward...

Wireless controllers only make sense when you have a lot of vehicles pulling the same trailer, or if your vehicle is not prewired (and wiring is difficult). The X is prewired; go with the P2 or P3. While your waiting for your P2 to come in, read my instructions and order the proper...

Shouldn't matter. Even if the brake controller is kicking in during the regen scenario, it should be very lightly and the lever will override that and go to a higher braking voltage, which is what you're trying to check. As long as you keep the vehicle moving at approximately 20-30mph during the...

According to Tekonsha the Prodigy P2 and P3 both have the same behavior; the difference is in the screen and diagnostic abilities. There is no magic number for trailer brake setup. You need to test tow your trailer fully loaded, at about 25mph, and while coasting apply maximum brakes using the...

Curious. Is this the Prodigy P2 or P3 controller or something else? I haven't heard any reports of this; I wonder if all of the clips that hold that panel are properly seated and undamaged.

I'll note this in the next version of the manual. There is only one mention of the connector, in the very last section, and I'll update it to be more generic. How did you obtain the step-down butt splices in your country?

I'm ready to publish the instructions as I feel they've been sufficiently validated. http://www.adelman.com/model-x-brake-controller.pdf Please do NOT copy or distribute the document, but rather the *link* to the document. I will update the copy behind this link as necessary.

Not so sure about that. I'd heard that the internal fuse in the battery is different if you've got Ludicrous mode.

When towing heavy trailers, the 22" tires are more prone to heat buildup and impact damage as compared to the 20" tires. As a result, Tesla decided to limit the trailer weight when using the 22" tires.

PM me your email address and I will send a draft of the instructions. Define validated. The controller has been tested extensively in a Model X with a number of different trailers. I'm waiting for someone to follow my installation instructions to validate *the instructions* before I publish...

The brake controller NEEDS to be hard mounted to accurately measure the deceleration of the vehicle. Velcro won't do it. I'm still looking for someone to validate my installation instructions before I publish them. Could that be you?

The brake light signal to the trailer could be a different signal than the "brake pedal activated" signal to the trailer brake controller.

The Prodigy should activate some brake on deceleration of any sort, and it should be more aggressive when it sees a brake-light signal. I'm not sure if Tesla sends a brake-light signal to the brake controller harness on strong regen deceleration or just when you actually use the brake.

That's an easy decision. The accessory receiver is 1.25"; the tow receiver is 2". There are a lot more choices of accessories to fit a 2" receiver. Go with the tow package.

I would second the idea about getting wider doors in your garage, if at all possible. The Model X is a WIDE car, and the Model S nearly as wide. Money spent on a wider door now will pay off every time you more easily and safely park the cars. You'll want one EVSE per car; having to swap one...

The tow package is NOT retrofittable. The rear structure of the car is different.

I'd rather have those up-front than unsecured in the rear of the car! My RAV4-EV will remain my dive vehicle!

Mine is blue, but it is in the Seaside Service Center right now, so that wasn't it (unless they were test driving it). It does have the trailer hitch receiver installed, so that might be one way to distinguish it. - - - Updated - - - Mine is a 6-seater.

I'm willing, but I'm in Corralitos, about half way between San Jose and Monterey. My car is in Seaside at the service center right now getting some minor issues worked, but I should have it back in a few days (or I could ask them to show it to you here).

I have the six seat interior and don't notice any such blocking. The headrests from the rear row definitely block. The rear window is small and tinted; it is almost impossible to see anything through it even if the path to the window is clear.

I haven't had a chance to tow something yet! Still waiting on the new trailer.

I'm not a sound system nut. I'm not sure I could tell the difference.

Anyone in the Santa Cruz area, or willing to travel, who is desperate to see a Model X. I'd be willing to show Sig #1 and talk about my experiences to any group of five or more (unrelated) people. I could also be bribed with beer and pizza.

Yes, but the door moves slowly enough, that it doesn't really hurt. There are current sensors in the motors to detect the hit and stop. Supposedly there are sensors to detect fingers in the pinch points, but I haven't wanted to test that. The FWDs are NOT foolproof. Opening, they might fail...

You're welcome! Ken

Actually, I'd consider 450# approaching dangerously light for a 4850# trailer. It should be 10-15% of the total trailer weight. Too light, and the trailer is prone to sway. I don't believe Tesla publishes a tongue-weight limit, but remember that the tongue weight you do have comes out of the...

Correct. This photograph shows the Tesla plug (this is the end you need, not the car end). It comes with the car, but can also be purchased as Tesla P/N 1072586-00-A.

Why not install a HPWC set to 50A breaker size using #3 copper wire. You're allowed to oversize the wire, and that way, it is a simple upgrade later to higher currents (for example, if you upgrade the house service, or decide that other loads won't be in use at the same time and you're willing...

It does NOT. It comes with the car pre-wired for one. There is standard 7-pin connector at the rear of the car to provide lights, power, and brakes to the trailer, and a non-standard 4-pin connector under the dash that you connect the brake controller to. - - - Updated - - - Not sure what...

It does. Go look under the dash on a Model X (or Model S) and you'll notice that there is a "Driver's Footwell Cover". My instructions show the steps required to safely remove this cover to access the under-dash connector. Doing this carefully is what takes most of the time. Also, the...

Hmm. Too cold to go outside and be sure, but from memory you need to be sure the key is unlocked and you can rotate the knob. I think you have to pull (or maybe it was push) the knob out, and then it rotates even further. It is only then that the locking balls are retracted enough to fully...

I asked, and was told that they hadn't figured out yet what they were going to offer. Ken

I've installed a Tekonsha Prodigy P2 brake controller in my Model X. Takes about 45 minutes to do (the second time you do it). I've a 12 page "how to" complete with pictures and part numbers, but I don't want to publicly release it until someone else has installed one using my instructions...

I would say it has the same "feel" as the Model S. It has been raining here pretty much non-stop since Friday when I picked it up, so I haven't really had a chance to push it hard. It seems just as nimble to me. Ken

The court rejected her suit under the California anti-SLAPP statute. (SLAPP stands for Strategic Litigation Against Public Participation.) Under the anti-SLAPP statute, I filed a special motion to dismiss her charges. Without any discovery being taken by either party, I had a burden of proof...

I was able to procure #3 a bit cheaper than #2. Also, you can get away with 1" conduit with #3, but that's a really tight pull for #2. - - - Updated - - - First off, the image WERE labeled copyrighted (in the EXIF information for Copyright holder), but as a later poster pointed out, the Berne...

I know people keep asking for pictures, but due to a continued problem with copyright infringement of EVERY photograph I've ever posted on this forum, expect no more from me. I really hate to go, but this is too much. In this case, the first infringement I found was from Teslarati.COM. The...

I would concur with that recommendation (wire for 100A breaker/80A delivered). The 14-50 is a nice idea, but if you have two garage bays, I would put it accessible to you other bay for a future second EV, not next to the Model X. - - - Updated - - - Are you talking about the indents in the...

You need an EVSE capable of 72A. I've got one capable of 70A; it sits on a 90A breaker with #3 CU wire. Ken

Now *that*'s service. One of the quirks discovered during delivery was that the charge rate only went up to 48A (not 72A). Hmm. Was my car built with a 48A charger??? Investigation during delivery showed that it was built with a 72A, but there was a software problem that limited the car to...

Lauren is the same specialist who delivered our Signature #44 Model S years ago.

Sig #1 is blue with the tan leather interior. Why did we chose blue? There were a few other factors besides that I think the blue better looking than the Sig Red. Our Model S (Sig #44) is Sig Red, and our Roadster is also a deep metallic red. Our blue 2013 RAV4-EV was totaled in an accident...

For those of you who don't believe me without pictures, that's ok. I forgive you. - - - Updated - - - Some photos from the delivery...

Signature #1 was delivered today in Fremont! More to follow later tonight.

I agree with Bonnie about not publishing a "soft" date, but I can say that I've received the same soft date as her (they plan on delivering Sig 1 and 2 together). It appears that many cars are being pre-positioned at other delivery points, but their delivery dates are expected to start after ours.

I would also agree with getting the 2" as a better accessory option. There are a lot more choices of racks, etc, to go with a 2" receiver than a 1.25".

Here is my new license plate for Signature #1:

Not sure where you are getting this information, but I'm Signature #1 and I've been told by car is "not yet in production" with no delivery forecast.