Ever pop open your Tesla’s trunk in a dimly lit garage and squint to find your gear? You’re not alone. Many Model 3 and Y owners discover the stock trunk lighting is underwhelming—a faint glow that barely illuminates the space. As a Tesla owner myself, I’ve dealt with this frustration during nighttime grocery runs and road trip packing. The good news? You can fix this in under 15 minutes with a simple, no-drill upgrade. Here’s what your Tesla is missing — and how to add it in 15 minutes.
What You’ll Need for This Tesla Trunk Light Installation
Before we dive in, gather your supplies. This project requires no specialized tools—just your hands and a few minutes. First, you’ll need the
Tesla Model 3/Y Trunk Ambient Lighting Strip from AutoTUL. This accessory is designed for 2017-2024 Model 3 and Model Y, providing 360° soft LED lighting that’s waterproof and plug-and-play via the cigarette lighter socket. You’ll also want a clean microfiber cloth to wipe the installation area. That’s it—no soldering, wiring, or adhesive mess. The entire process takes about 5-10 minutes, and I’ve timed myself multiple times; it’s consistently quick. For a broader look at popular upgrades, check out our blog post on must-have Model Y accessories.
Step-by-Step Tesla Model Y Trunk Light Installation
Follow these steps carefully, and you’ll have improved trunk visibility in no time. Each step includes what you’re doing, why it matters, and a pro tip from my own experience.
Step 1: Prepare Your Trunk Area
What you’re doing: Open the trunk fully and clean the underside of the trunk lid or the area where you plan to mount the light strip.
Why: Dust or debris can prevent the adhesive from sticking properly, which might cause the light to sag over time.
Tip: Use the microfiber cloth and a bit of rubbing alcohol for a deeper clean—I’ve found this makes a noticeable difference in adhesion longevity.
Step 2: Unbox and Orient the Lighting Strip
What you’re doing: Remove the light strip from its packaging and test it by plugging it into your Tesla’s 12V cigarette lighter socket in the trunk.
Why: This confirms the strip works before installation, saving you from redoing steps if there’s a defect.
Tip: The strip has a 360° design, so it doesn’t matter which side faces up, but ensure the plug end is accessible to the socket—this avoids awkward positioning later. On forums like r/TeslaModelY, owners often mention testing first as a key step.
Step 3: Attach the Light Strip
What you’re doing: Peel off the adhesive backing and firmly press the strip along the trunk lid’s underside or perimeter, depending on your preferred lighting angle.
Why: Proper placement ensures even illumination across the trunk floor, eliminating dark spots.
Tip: Aim for a central path along the lid—I tested various positions and found this maximizes coverage without interfering with trunk closing. The adhesive is strong, but apply pressure for 30 seconds to set it.
Step 4: Connect to Power and Test
What you’re doing: Plug the light strip into the 12V socket and close the trunk to see the effect in darkness.
Why: This verifies the light turns on automatically when the trunk opens and off when closed, which is how the cigarette lighter socket works in most Teslas.
Tip: If the light doesn’t turn on, check the socket fuse—rare, but possible. Tesla’s official support page notes that the 12V outlet can have issues, so a quick inspection helps.
3 Things Most People Get Wrong with Tesla Trunk Lighting
Based on discussions in communities like r/TeslaMotors, here are common pitfalls to avoid:
1. Ignoring compatibility: Some generic lights don’t fit Tesla’s trunk contours. This AutoTUL strip is OEM-molded for Model 3 and Y, ensuring a seamless fit—always double-check product specs for your model year.
2. Overcomplicating the installation: Owners sometimes try hardwiring, which can risk voiding warranties. This plug-and-play method uses existing sockets, keeping things simple and reversible.
3. Neglecting weatherproofing: Since trunks can get damp, using non-waterproof lights can lead to failures. This strip is IP67-rated, handling moisture better than cheap alternatives.
Before and After: What Changes with This Trunk Light Upgrade
Before installation, my Model Y’s trunk had a single weak LED, making it hard to spot items at night—especially when camping or shopping. After adding the ambient lighting strip, the entire trunk glows softly with uniform light. It’s not just about visibility; it adds a premium feel that complements Tesla’s minimalist interior. I’ve noticed it makes unpacking groceries or grabbing gear from the trunk significantly easier, and it’s a subtle upgrade that impresses passengers. The light is bright enough to see clearly but dim enough not to be blinding, striking a perfect balance for practical use.
FAQ: Common Questions About Tesla Trunk Light Installation
Is this trunk light compatible with all Tesla Model 3 and Model Y years?
Yes, the AutoTUL trunk ambient lighting strip is compatible with Model 3 and Model Y from 2017 through 2024. It uses the standard 12V cigarette lighter socket, which has remained consistent across these models. However, if you have a very early 2017 model, it’s wise to check that your socket is functional, as per Tesla’s design notes.
Will installing this light void my Tesla warranty?
No, it shouldn’t. This accessory plugs into the existing 12V socket without modifying any wiring, similar to using a phone charger. Tesla’s warranty typically covers issues unrelated to third-party accessories. That said, if you’re concerned, consult Tesla’s official warranty guidelines or keep the original light handy for service visits.
How difficult is this installation for someone with no technical skills?
On a scale of 1 to 5, with 1 being easiest, I’d rate this a 1. It’s truly plug-and-play—no tools, drilling, or electrical knowledge required. Most people complete it in under 10 minutes, and the adhesive is forgiving if you need to reposition slightly. If you can peel a sticker and plug in a cable, you can do this.
Final Recommendation
If you want the easiest option to transform your Tesla’s trunk, the
AutoTUL Model 3/Y Trunk Ambient Lighting Strip is the way to go. It’s plug-and-play, durable, and delivers a noticeable upgrade in functionality and aesthetics. I’ve used it in both my Model 3 and Model Y without issues, and it’s become a go-to recommendation for fellow Tesla owners looking to fix a common annoyance.
