Speaker Wiring Harness Adapter Kit | 2025+ 4Runner
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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)
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
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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 (also written TrailGridPro) 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
Shop all 71 Trail Grid ProWarrantyAll 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.
Trail Grid Pro Speaker Wiring Harness Adapter Kit — 2025+ Toyota 4Runner
These plug-and-play adapters let you put the speakers of your choice into a 2025+ 4Runner without cutting or splicing the factory wiring. They're the same harnesses Trail Grid Pro uses in its 4Runner Alpine and Kicker speaker kits.
There are two versions. If your dash has a JBL-logo center speaker, you have the JBL amplified system; if not, you have base audio. The install is reversible, so the truck can go back to stock.
| Spec | Detail |
|---|---|
| Fitment | 2025+ Toyota 4Runner, all trims |
| Non-amplified (base audio) positions | 2x dash, 2x front door, 2x rear door |
| JBL amplified positions | 2x dash, 2x front door, 2x A-pillar, 2x rear door, 2x rear door tweeter, 2x back hatch |
| How to tell | JBL logo on the center dash speaker = JBL amplified; no JBL logo = base audio |
| Install | Plug-and-play, no cutting or splicing; reversible |
Do I need the JBL or the non-JBL version?
Look at the center speaker on your dash. If it has a JBL logo, choose JBL Amplified. If it doesn't, choose Non-JBL (base audio).
Which speaker locations are covered?
Base audio covers the dash, front doors and rear doors. The JBL amplified kit adds the A-pillars, rear door tweeters and back hatch.
Do I have to cut factory wiring?
No. The adapters plug in between the factory connectors and your speakers, and the install is reversible.
Will these fit an older 4Runner?
This kit is for the 2025 and newer 4Runner only.
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