Wires I can tap for Speedometer display?

[Jrnosef]

Can someone help me with this please? I drive with my hand in the 2 o’clock position and it perfectly blocks the speedometer on the screen. I was looking at getting an aftermarket speedometer that would go behind the steering wheel, but the only one I even somewhat liked blocks the air vent… Can someone please let me know of a wiring diagram or something I can tap into that goes to the speedometer?? I really want to 3d print and create my own speedometer and I have a great idea of what to make but I want to know how the speedometer is recorded first. Or at least know what wire reads the car’s speed. Please let me know, thanks guys!!

 

[EVRider-FL]

Which year Model S? In my 2018 the speed is displayed in the middle of the instrument cluster, so I don’t see how anything but the top of the wheel would block it. Have you tried raising or lowering your seat?

 

[vcor]

The speedometer is entirely digital so you would need to tap into the CAN bus with a processor, write software to read the can bus, filter the speedometer signal, and then display it. Not sure it is worth it, but it is possible. My guess is about $100 in parts, and maybe 100 hours of work if you're a good hardware/software engineer.

Might be easier to switch to a Yoke-style steering wheel like used on the 2022 S/X. There are aftermarket options that you can install, as quite a few owners do this for increased safety and visibility. Yokes are available for the S/X/3/Y (but are different depending on the year/model).

Of course, as EVRider points out, perhaps a different seat/steering position would solve it.

 

[NewbyMaybe]

Your left hand is at the 2oclock? If this is correct then you should know it's better to use the 10 and 2 because the airbag is less likely to break your arm if it's triggered.