✓ VERIFIED
Oct 30, 2020
Very good buy , great replacement on my 99 FXD that had no Brake light or blinkers this purchase fixed all five lighting problems
NAMZ CUSTOM CYCLE
SKU: 850-09080
NAMZ Custom Cycle Isolator 5 4-Wire Trailer Isolator - Harley & Indian V-Twin
$391.000,00
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About NAMZ Custom Cycle
NAMZ Custom Cycle builds plug-and-play wiring harnesses, extension kits and electrical components for Harley-Davidson. Its handlebar extension and connector kits are what make an ape hanger or bagger bar swap a bolt-in job instead of a splicing project.
The NAMZ Trailer Isolator 5 is a critical upgrade for any V-twin owner towing a trailer, protecting your motorcycle's sensitive electronics. This 4-wire relay module takes power and signals directly from your battery to drive your trailer's light harness safely. By isolating the trailer's electrical load through dedicated relays, it prevents premature failure of your OEM turn signal module and eliminates battery drain issues.
Why riders pick this
- Protects OEM turn signal module from trailer current
- Draws trailer power directly from the battery
- Four-relay isolation bank for robust performance
- Prevents battery drain and electrical overload
- Universal 4-wire molded flat connector output
When you hitch up a trailer to your Harley or Indian, you're adding an electrical load that your factory turn signal module might not be designed to handle. The NAMZ Trailer Isolator 5 steps in to prevent costly damage. It acts as a buffer, drawing all the necessary power for your trailer's lights directly from your motorcycle's battery, bypassing your OEM module entirely.
Protect Your V-Twin's Electrical System
- Draws trailer power from the battery, not the OEM turn signal module
- Utilizes a bank of four relays to isolate trailer signals from factory circuits
- Prevents premature failure of your motorcycle's turn signal module
- Ensures reliable power delivery to your trailer lights
Seamless Integration for Towing
This isolator features a 4-wire molded flat connector output, making it compatible with many standard trailer setups. It's engineered for straightforward integration, allowing you to tow with confidence knowing your motorcycle's electrical system is safeguarded. This small investment can save you significant repair costs down the road by protecting sensitive factory components from overload.
Specifications
- Brand: NAMZ Custom Cycle
- Manufacturer Part #: NTIC-01
- UPC: 810088716508
- Length: 12 in
- Width: 6 in
- Height: 2 in
- Weight: 0.5 lbs
Common questions
Why do I need a trailer isolator instead of wiring directly to my bike?
A trailer isolator prevents your OEM turn signal module from overheating and failing by drawing trailer current through dedicated relays powered by the battery, which factory modules are not rated for.
What does the 4-wire output connect to?
The molded 4-pin connector provides left/brake, right/brake, run, and ground wires for standard trailer plugs. Confirm your trailer's wiring configuration before ordering.
Is this a universal fit for V-twin motorcycles?
This isolator is designed for general V-twin applications with a 4-wire trailer setup. Always confirm compatibility with your specific motorcycle and trailer wiring before installation.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | NAMZ Custom Cycle |
| TYPE | Electrical |
| SKU | 850-09080 |
| WEIGHT | 0.5 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
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