# Power and CAN Connection

There are several ways to connect power and CAN on different Model 3 / Model Y, depending on the model year. We will introduce all of them to you, which are applicable to most of our mods.

## Method 1 - Power & CAN Connection on Intel MCU

{% hint style="info" %}
This method is only applicable to:

* Model 3 (2017-2021) with Intel Atom MCU
* Model Y (2020-2021) with Intel Atom MCU

You can get **Constant Power** here.
{% endhint %}

First, remove the bottom cover on the passenger side (FRONT RIGHT for LHD cars / FRONT LEFT for RHD cars). It is secured by 3 push pins.

<figure><img src="/files/ZGKlj0J1HKqDnIIhL4d9" alt="" width="563"><figcaption></figcaption></figure>

Locate the MCU. Connectors are always on the right side of the MCU.

<figure><img src="/files/zJDnxIZ3qwGTWd8R4TeS" alt="" width="563"><figcaption></figcaption></figure>

Disconnect the grey connector from the MCU. It is the second connector counting from bottom. Daisy-chain our Y-splitter wire to the connector pair.

<figure><img src="/files/FYvTzT9wHHnqtcEoXnDY" alt="" width="563"><figcaption></figcaption></figure>

## Method 2 - Power & CAN Connection below Rear Air Vent

{% hint style="info" %}
This method is only applicable to:

* Model 3 (2017-2018) - Connection is 20-pin
* Model 3 (2019-2023) - Connection is 26-pin
* Model Y (2020-2024) - Connection is 26-pin

You can get **Switched Power** here.
{% endhint %}

Remove the plastic cover below the rear air vent.

<figure><img src="/files/V903wtuxpBDfrJDmNCAe" alt="" width="563"><figcaption></figcaption></figure>

Disconnect the blue connector.

<figure><img src="/files/LJw2rxErcQ1V6Qm7onSl" alt="" width="563"><figcaption></figcaption></figure>

Daisy chain the provided y-splitter to this connector pair. You

<figure><img src="/files/OfWAKM0cA1KtBcOoMlVu" alt="" width="563"><figcaption></figcaption></figure>

## Method 3 - Power & CAN Connection below Right A-Pillar

{% hint style="info" %}
This method is only applicable to:

* Model 3 (2021-2023)
* Model 3 (2024+)
* Model Y (2020-2024)
* Model Y (2025+) (Power connector is different)

You can get **Switched Power** here.
{% endhint %}

On the right side of the car (the image below shows the left side, but you should work on the right side), release the upper clip that attaches the middle A-Pillar trim to the vehicle. Then, pull the trim upwards to remove it.

<figure><img src="/files/-M3dqUv1KCLo3u7zz6xx" alt="" width="563"><figcaption></figcaption></figure>

Release the topmost clip on the lower A-pillar trim.

<figure><img src="https://files.gitbook.com/v0/b/gitbook-legacy-files/o/assets%2F-M-dc4xUrseLhJBxZFSX%2F-M3doY83OnchLMtiBpaE%2F-M3drW2riKwWP_YmVwD6%2Fpry%20out%20small%20pin.png?alt=media&#x26;token=43569ae4-f9e2-4211-9538-c91593526cb2" alt="" width="563"><figcaption></figcaption></figure>

Pull the rearmost part of the lower A-pillar trim upward to release the clips and tabs. Then, pull the entire trim rearward to remove it from the vehicle.

<figure><img src="https://files.gitbook.com/v0/b/gitbook-legacy-files/o/assets%2F-M-dc4xUrseLhJBxZFSX%2F-M3doY83OnchLMtiBpaE%2F-M3drh0lqVeB3twUmtps%2Fremove%20big%20cover.png?alt=media&#x26;token=c5488351-7919-4283-baad-a3550a062d8e" alt="" width="563"><figcaption></figcaption></figure>

Locate this blue idle connector located behind the kick panel near the door on the right side of the car. The position is slightly different on a Model 3 and a Model Y. You need to pull out the carpet to expose the connector on a Model 3. Now the CAN signal is connected.

<figure><img src="/files/8SpZXCs4JcHZJTaXYYbY" alt="" width="563"><figcaption></figcaption></figure>

Locate the white connector pair for temperature sensor nearby. Daisy-chain our Y-splitter wire to the connector pair. Now the switched power is connected.

<figure><img src="https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M-dc4xUrseLhJBxZFSX%2Fuploads%2FHRIccbLdMHba2diErGTC%2F21.webp?alt=media&#x26;token=9b6fbf9b-04b0-4ea8-9a41-a9c4af109d3f" alt=""><figcaption></figcaption></figure>

## Method 4 - Power Connection at Low Voltage Battery

{% hint style="info" %}
This method is only applicable to:

* Model 3 (2017-2023)
* Model 3 (2024+)
* Model Y (2020-2024)

You can get **Constant Power** here.
{% endhint %}

*If the wire harness need to be run from the cabin, follow the following instructions. Otherwise, skip directly to the power connection.*

Remove the bottom cover on the front right seat. It is secured by 3 push pins / 1 T-20 screw, depending on the model year. For Model 3 2024+, it is just secured by clips and you can pull it off directly.

<figure><img src="/files/kRlS2HHOFWL2Tu4vmieN" alt="" width="563"><figcaption></figcaption></figure>

Locate the firewall, use a fishing tape to run the power wire throught it.

<figure><img src="/files/uz2S6fLDjfSLPTnk1utW" alt="" width="563"><figcaption></figcaption></figure>

Retrieve the wire in the frunk area.

<figure><img src="/files/qUMIeccP24p5KC2uV0dN" alt="" width="563"><figcaption></figcaption></figure>

Connect the power wire to jump post / positive terminal. For Model Y 2022+, you can sucure the power wire with a M8 nut.

<figure><img src="/files/u6zMAYhUZqPAsYkS841b" alt="" width="563"><figcaption><p>Securing the power wire to jump post on a Model Y with M8 nut</p></figcaption></figure>

## Method 5 - Power Connection at VC Right

{% hint style="info" %}
This method is only applicable to:

* Model 3 (2017-2020)

You can get **Constant Power** here.
{% endhint %}

Remove the bottom cover on the front right seat. It is secured by 3 push pins / 1 T-20 screw, depending on the model year.

<figure><img src="/files/kRlS2HHOFWL2Tu4vmieN" alt="" width="563"><figcaption></figcaption></figure>

On the right side of the car (the image below shows the left side, but you should work on the right side), release the upper clip that attaches the middle A-Pillar trim to the vehicle. Then, pull the trim upwards to remove it.

<figure><img src="/files/-M3dqUv1KCLo3u7zz6xx" alt="" width="563"><figcaption></figcaption></figure>

Release the topmost clip on the lower A-pillar trim.

<figure><img src="https://files.gitbook.com/v0/b/gitbook-legacy-files/o/assets%2F-M-dc4xUrseLhJBxZFSX%2F-M3doY83OnchLMtiBpaE%2F-M3drW2riKwWP_YmVwD6%2Fpry%20out%20small%20pin.png?alt=media&#x26;token=43569ae4-f9e2-4211-9538-c91593526cb2" alt="" width="563"><figcaption></figcaption></figure>

Pull the rearmost part of the lower A-pillar trim upward to release the clips and tabs. Then, pull the entire trim rearward to remove it from the vehicle.

<figure><img src="https://files.gitbook.com/v0/b/gitbook-legacy-files/o/assets%2F-M-dc4xUrseLhJBxZFSX%2F-M3doY83OnchLMtiBpaE%2F-M3drh0lqVeB3twUmtps%2Fremove%20big%20cover.png?alt=media&#x26;token=c5488351-7919-4283-baad-a3550a062d8e" alt="" width="563"><figcaption></figcaption></figure>

After removing the cover, you can access the VCC right in the car. There 's a thick red wire that ends in a 10mm hex nut. Loosen the nut, and then insert the 12V fuse wire into the spot, tighten it. A short wrench is recommended.

<figure><img src="/files/KrSZmWJ1IGTRG6CNbNry" alt="" width="563"><figcaption></figcaption></figure>


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