NAMZ Custom Cycle Namz Trailer Isolators - Isolator TRI Glide Models 14-UP — Harley-Davidson Tri Glide Ultra Classic (2014-2025)

NAMZ Trailer Isolator for Harley Tri Glide models 2014 and up, protecting the factory turn signal module by routing trailer power through a dedicated 4-relay bank instead of overloading the OEM system. Available in 5-wire or 4-wire flat connector configurations to match your trailer harness.

Features

• Routes trailer signals through 4-relay bank to isolate OEM turn signal module
• Direct battery power draw eliminates strain on factory electronics
• 5-wire output option: left, right, brake, turn, and ground
• 4-wire flat connector option: left/brake, right/brake, run, and ground
• Factory turn signal module protection prevents costly replacement

Specifications

• Brand: NAMZ Custom Cycle
• Manufacturer Part #: NTI-08-TRI
• UPC: 810088716485
• Dimensions: 12 in L x 6 in W x 2 in H
• Weight: 0.75 lbs

Fitment

Fits Harley-Davidson Tri Glide models 2014 and newer.

Frequently Asked Questions

Why do I need a trailer isolator?

It protects your factory turn signal module by drawing trailer power from the battery through relays, not through the OEM module—preventing premature $300+ module failure.

What's the difference between the 5-wire and 4-wire versions?

5-wire has separate left, right, brake, turn, and ground. 4-wire uses a molded flat 4-pin connector with combined left/brake, right/brake, run, and ground.

Does this work with any trailer connector?

Choose the version matching your trailer harness—5-wire for standard trailer plugs, or 4-wire for flat connectors. NAMZ offers both.

Will this damage my turn signal module if I don't use it?

Running a trailer without an isolator puts excessive load on your factory turn signal module, which can fail prematurely. The isolator prevents that damage.