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Our engineers have create a complete DIY kit for adding a cigarette lighter type power port to the frunk of your Tesla Model 3, Y, S, or X. This DIY kit includes step-by-step instructions for installation. The kit does require drilling a hole in the funk wall plastic panel, to mount the port plug. This is the perfect kit to add power to the frunk for using out Tesla Frunk Refrigerator / Freezer Cooler.
Specifications:
What is Included:
Use this guide when installing T Sportline 12V accessories in Tesla Model 3, Model Y, Model S and Model X vehicles. Tesla has used both traditional 12V lead-acid/AGM batteries and newer lithium-ion low-voltage systems depending on model and production date.
| Vehicle | Years / Production | LV System | Battery Location | Positive Connection | Ground Connection | T Sportline Kit is Plug & Play Install? |
|---|---|---|---|---|---|---|
| Model 3 | 2017–2021 Early production / lead-acid equipped |
12V Lead-acid 45Ah |
Underhood, beneath the maintenance/cabin-intake trim at the rear of the frunk area. | 12V battery positive terminal. | 12V battery negative terminal or appropriate chassis ground. |
YES Standard 12V installation. |
| Model 3 | Late 2021–2023 Lithium-ion equipped |
15–16V Class Lithium-ion |
Underhood beneath the rear maintenance panel. | Red positive (+) LV jump post beneath the maintenance panel. Do not connect the accessory directly to the lithium-ion LV battery. | Tesla-designated chassis/negative jump point adjacent to the underhood service area. |
NO Requires a compatible DC/DC converter and connection to the Tesla LV service/jump point. |
| Model 3 | 2024+ Highland |
15.5V Lithium-ion 6.9Ah |
Underhood low-voltage service area. | Positive (+) LV service/jump connection. Do not connect directly to the lithium-ion LV battery. | Tesla-designated chassis/negative LV connection point. |
NO Requires a compatible DC/DC converter and connection to the Tesla LV service/jump point. |
| Model Y | 2020–2021 Early production / lead-acid equipped |
12V Lead-acid 45Ah |
Underhood beneath the maintenance/cabin-intake trim behind the frunk. HEPA-equipped vehicles may require moving the HEPA gasket for access. | 12V battery positive terminal. | 12V battery negative terminal or appropriate chassis ground. |
YES Standard 12V installation. |
| Model Y | Late 2021–2024 Lithium-ion equipped |
15–16V Class Lithium-ion |
Underhood beneath the maintenance panel / HEPA-filter area. | Pull back the HEPA-area gasket/seal and remove the red cover to access the positive (+) LV jump post. | HEPA-filter mounting bolt serves as Tesla's designated negative (-) jump point. |
NO Requires a compatible DC/DC converter and connection to the Tesla LV service/jump point. |
| Model Y | 2025+ Current generation |
14.4–15.5V Lithium-ion Configuration dependent |
Underhood low-voltage service area. | Tesla-designated positive (+) LV service/jump connection. Do not connect directly to the lithium-ion LV battery. | Tesla-designated chassis/negative LV connection. |
NO Requires a compatible DC/DC converter and connection to the Tesla LV service/jump point. |
| Model S | 2012–2020 |
12V AGM / lead-acid |
Underhood, behind the frunk/underhood trim. | Dedicated 12V positive (+) jump terminal. | Vehicle negative/chassis jump connection. |
YES Standard 12V installation using the designated LV connection. |
| Model S | 2021+ Refresh / Palladium |
15V Nominal Lithium-ion with integrated BMS |
Underhood behind the frunk/storage area, beneath the rear underhood apron near the multi-system beam. | Positive (+) LV jump post in the underhood service area. Do not connect directly to the lithium-ion LV battery. | Multi-system beam / designated chassis ground. |
NO Requires a compatible DC/DC converter and connection to the Tesla LV service/jump point. |
| Model X | 2015–2020 |
12V Lead-acid / AGM |
Underhood beneath the maintenance trim behind the frunk area. | Dedicated red positive (+) 12V jump post. | Tesla-designated negative/chassis jump connection. |
YES Standard 12V installation using the designated LV connection. |
| Model X | 2021+ Refresh / Palladium |
15V Nominal Lithium-ion with integrated BMS |
Underhood behind the frunk/storage area, beneath the rear underhood apron near the multi-system beam. | Positive (+) LV jump post in the underhood service area. Do not connect directly to the lithium-ion LV battery. | Tesla-designated multi-system beam / chassis ground. |
NO Requires a compatible DC/DC converter and connection to the Tesla LV service/jump point. |
As a general production reference, Fremont-built Model 3 and Model Y vehicles manufactured before approximately December 2021 typically use the lead-acid LV battery, while vehicles manufactured after approximately December 2021 typically use the lithium-ion LV battery. Production timing may vary by factory and market, so the vehicle should always be checked before installation.
A DC/DC voltage converter is normally not required on conventional 12V-equipped vehicles, provided the accessory is designed for normal automotive 12V operating and charging voltages.
| Vehicle | Older Architecture | Newer Architecture | T Sportline Plug & Play? |
|---|---|---|---|
| Model 3 | 2017–2021: 12V lead-acid* | Late 2021+: lithium-ion / 15–16V class* | 12V: YES Lithium-ion: NO |
| Model Y | 2020–2021: 12V lead-acid* | Late 2021+: lithium-ion / approximately 14–16V depending on configuration* | 12V: YES Lithium-ion: NO |
| Model S | 2012–2020: 12V AGM | 2021+: 15V nominal lithium-ion | 12V: YES Lithium-ion: NO |
| Model X | 2015–2020: 12V lead-acid / AGM | 2021+: 15V nominal lithium-ion | 12V: YES Lithium-ion: NO |
*2021 Model 3 and Model Y are transition applications. Always verify the installed low-voltage battery type before installation. Vehicle specifications, production changes and component locations may vary by factory, configuration and production date.
T Sportline accessory installation information is provided for qualified installation purposes. Always follow applicable Tesla service information and standard automotive electrical safety practices. Never modify or connect to orange high-voltage components or wiring.
Tesla lithium-ion low-voltage systems are actively monitored by the vehicle. T Sportline does not recommend using these connections for high-current or continuous aftermarket loads. Excessive accessory power consumption may affect normal low-voltage system monitoring and may result in vehicle warnings, faults or BMS-related error messages.