Speaker Wiring Harness Adapter Kit | '14 - '21 Tundra

$48.60 $54.00

Factory Amplified System?

180-Day ReturnsOn uninstalled, unused parts Real humans who wheel(920) 249-7744 PayPal Credit acceptedFinancing option at checkout Secure checkoutEncrypted payment

Confirmed fit: 2014–2021 Toyota Tundra

Verified to fit the 2014–2021 Toyota Tundra.

Warranty Information

Vendor warranty summary

Trail Grid Pro Warranty

At a glance: 1- or 3-year limited warranty on most products (unless the maker specifies otherwise)

Shop Trail Grid Pro Official Trail Grid Pro policy All warranty policies

This is Trail Grid Pro's warranty, not an NVMOS policy. We've summarized it in plain English to save you a search. The manufacturer's official terms always govern and can change without notice. Last reviewed on nvmos.com: October 4, 2026.

Coverage by product

Product or component	Coverage
Most products	1 or 3 years limited (varies; manufacturer's terms apply where specified)
Returns, any reason	30 days from shipment

What's covered

Defective or damaged items under warranty
Only the specific defective component is replaced

What's not covered

Cut, spliced or modified wiring
Improper or third-party installation
Physical damage such as scratches, dents or drops
Damaged or punctured speakers
Misuse or abuse
Attempts to bypass parking-brake lockouts on Alpine units

How to make a Trail Grid Pro warranty claim

Log into your Trail Grid Pro account and start a request in the self-service returns portal
Inspection takes about 2-4 business days
Contact technical support with questions

Trail Grid Pro contact: Phone: 301.835.9100 · Claim page / support

Bought it from NVMOS? Start with us.

Have your order number and a few photos of the issue ready, then call real humans at (920) 249-7744 or send us a message. We'll tell you whether the claim goes through us or straight to Trail Grid Pro, and help it along either way.

Shop Trail Grid Pro at NVMOS

Tundra JBL Amp Bypass Harness | '14 - '21 Tundra

ZZAIR-PRO 2

Toyota Tacoma 10" Subwoofer Enclosure | '16 - '23 Tacoma

See all Trail Grid Pro products, lead times and FAQs →

Disclaimer: The information on this page describes Trail Grid Pro's own warranty policy. It is not a warranty offered by NVMOS (No Visible Means of Support LLC). Manufacturers update their terms at any time; we review these pages periodically, but the manufacturer's current official policy is the one that applies to your claim. Source: Trail Grid Pro official warranty information. Last updated on nvmos.com: October 4, 2026. See our return policy for NVMOS's own terms.

About the brand

Trail Grid Pro

Trail Grid Pro is a Toyota-focused parts company in Frederick, Maryland, known for plug-and-play audio upgrades. NVMOS carries its speaker bundles, subwoofer enclosures, amp bypass harnesses, camera kits and brackets for 4Runner, Tacoma, Tundra and Land Cruiser owners who want better sound without cutting factory wiring.

Based in: Frederick, Maryland · Founded: 2021 · Made in: Assembled to order in Maryland · Lead time: Assembled to order; see product page

Trail Grid Pro warranty: 1- or 3-year limited warranty on most products (unless the maker specifies otherwise). Read the full summary

Shop all 65 Trail Grid Pro Warranty All brands

Warranty terms are set by Trail Grid Pro, not NVMOS, and can change. Bought from us? Call (920) 249-7744 and we'll handle the claim with the brand.

More details

Speaker Wiring Harness Adapter Kit

Simplify your install on '14 - '21 Tundra with this Speaker Wiring Harness Adapter Kit built to help create a cleaner, more reliable plug-and-play connection.

Upgrade your 2014–2021 Toyota Tundra’s sound system the right way with Trail Grid Pro Speaker Adapters — the same adapters featured in our popular Alpine Tundra Speaker Kits .

Key Features

Vehicle fitment: '14 - '21 Tundra
Built as a 6-speaker upgrade package
Supports an 8-speaker upgrade setup
Compatible with JBL amplified applications where noted
If you have a JBL logo on the top of your door speakers then you have a JBL Amplified System .
Compatible Vehicles: 2014–2021 Toyota Tundra (All Trims)

Why Choose This Product

This harness helps reduce guesswork during installation and is a smart upgrade for anyone who wants a simpler, cleaner connection in '14 - '21 Tundra.

Perfect For

Perfect for '14 - '21 Tundra owners upgrading factory audio components, planning a cleaner install, or building a more capable daily-driver or adventure-ready sound system.