Recent content by adelman

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.