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    Tesla Frunk Auxiliary Cigarette Lighter Type 12-16v Power Port Kit

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    • Description


      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:

      • Uses Tesla low voltage battery (under hood cowl)
      • 10amp fused
      • Rated for 12-24v
      • Note: will be 'on' at all times (never 'switched' on/off)
      • Fitment - refer to chart below for vehicle specific notes


      What is Included:

      • Cigarette Lighter Type Power Port
      • Wiring Harness with fuse
      • Installation Hole Saw

      Tesla Low-Voltage Power Connection Guide

      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.

      Important Do not assume that every Tesla uses a conventional 12V battery. Newer vehicles use a higher-voltage lithium-ion low-voltage system. A regulated DC/DC converter is required when powering 12V-only accessories from these vehicles.

      Tesla Low-Voltage Compatibility Matrix

      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.

      2021 Model 3 & Model Y — Verify Before Installation

      2021 is a transition year. Model 3 and Model Y vehicles built during 2021 may have either a conventional 12V lead-acid battery or Tesla's newer lithium-ion low-voltage battery.

      Before installation, verify the vehicle's low-voltage battery type on the touchscreen under:

      Controls > Software > Additional Vehicle Information

      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.

      Recommended T Sportline Wiring — 12V Battery Vehicles

      Vehicle 12V Positive  →  Included 10A Fuse  →  T Sportline 12V Accessory
      Accessory Ground  →  Vehicle Chassis Ground

      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.

      Recommended T Sportline Wiring — Lithium-Ion LV Vehicles

      Tesla LV Positive Jump Point  →  Included 10A Fuse  →  DC/DC Converter  →  Regulated 12V Accessory Power
      Converter Ground  →  Tesla Designated Chassis Ground
      Important — Lithium-Ion Low-Voltage Vehicles Do not connect T Sportline accessories directly to the lithium-ion LV battery. Use the designated low-voltage service/jump connection and chassis ground. A compatible DC/DC converter must be used to supply regulated 12V power to the accessory.

      The T Sportline accessory system is designed for a maximum accessory load of approximately 50 watts. The included 10A fuse provides additional circuit protection and safety margin.

      High-current or continuous accessory loads are not recommended on Tesla lithium-ion low-voltage systems. Excessive or sustained aftermarket load may interfere with normal low-voltage system monitoring and may cause the vehicle's onboard Battery Management System (BMS) or related vehicle electronics to report abnormal low-voltage power consumption or system faults.

      Recommended Electrical Specification — Up to 50W

      Maximum Accessory Load Approximately 50 watts at 12V
      DC/DC Converter 50–100W automotive-rated minimum for lithium-ion LV vehicles
      Converter Input Wide-range input recommended, approximately 9–18V or wider
      Converter Output Regulated 12V DC
      Fuse Included 10A fuse
      Primary Power Wire 16 AWG (min) automotive-grade wire recommended
      Why a 10A fuse with a 50W accessory rating? The accessory system is intended for loads up to approximately 50W. The included 10A fuse is sized to provide reasonable installation and transient-current margin while continuing to protect the accessory wiring from excessive current or a short circuit. The fuse rating should not be interpreted as approval to operate a continuous 10A load.

      Installation Guidelines

      1. Confirm the vehicle model, model year and low-voltage battery type before beginning installation.
      2. On lithium-ion LV vehicles, do not attach the accessory power lead directly to the LV battery.
      3. Use the Tesla-designated positive LV service/jump point whenever specified in this guide.
      4. Connect ground to the specified vehicle chassis/negative connection rather than directly to the lithium-ion battery.
      5. Use the included 10A fuse and install it as close as practical to the vehicle-positive connection point.
      6. The T Sportline accessory system is intended for a maximum load of approximately 50 watts. Do not increase accessory load based solely on the 10A fuse rating.
      7. High or continuous accessory loads are not recommended on Tesla lithium-ion low-voltage systems and may trigger abnormal-load or low-voltage system warnings.
      8. Route wiring away from steering components, suspension components, cooling lines, sharp edges, high-temperature components and high-voltage wiring.
      9. Do not drill or install fasteners near orange high-voltage wiring, high-voltage components or the high-voltage battery.
      10. Secure all wiring and the DC/DC converter so neither can move, vibrate against surrounding components or interfere with factory service access.
      11. Confirm proper accessory operation before reinstalling all underhood trim panels.

      Low-Voltage Battery Quick Reference

      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.