✓ 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: 850-09079
NAMZ Custom Cycle Trailer Isolator 4-Pin Flat Connector - Harley Touring & Softail
$391.000,00
Free shipping on orders $99+ · Best value guarantee
affirm
From $32.583,33/mo with Affirm.
See if you prequalify
OUT OF STOCK
Free Shipping on orders $99+
Best Value Guarantee
30-Day Returns — see policy
Authorized Dealer — sourced direct
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.
Ensure safe and reliable trailer operation with the NAMZ Custom Cycle Trailer Isolator, featuring a 4-pin molded connector for your trailer. This isolator is engineered to protect your Harley-Davidson's OEM turn signal module from the increased electrical load of towing. It provides a dedicated, isolated power source for your trailer lights, preventing premature wear on your bike's electronics.
Why riders pick this
- Protects OEM turn signal module from trailer load
- Features 4-wire output with molded flat 4-pin connector
- Draws power directly from the battery via relays
- Manages combined brake/turn, run, and ground signals
- Compact design for easy mounting
This NAMZ Custom Cycle trailer isolator is designed to integrate seamlessly with a wide range of Harley-Davidson Touring and Softail models, offering essential protection when towing. It features a 4-wire output with a molded flat 4-pin connector, providing left/brake, right/brake, running, and ground signals to your trailer. The isolator draws power directly from your battery through a bank of four relays, effectively preventing the trailer's electrical demands from overloading your OEM turn signal module. This smart design safeguards your bike's electrical system against costly damage and ensures consistent performance.
Reliable 4-Wire Trailer Connection
- Features a 4-wire output with a molded flat 4-pin connector
- Manages left/brake, right/brake, running, and ground circuits
- Draws power directly from the battery via internal relays
- Protects the OEM turn signal module from trailer electrical load
Essential for Towing with Your Harley
For Harley-Davidson riders who tow trailers, this NAMZ isolator is a critical component for maintaining the health of your motorcycle's electrical system. It eliminates the strain on your OEM turn signal module, which can be expensive to replace if damaged by excessive current draw. With its compact footprint and robust design, this isolator offers peace of mind, allowing you to focus on the journey ahead, knowing your bike and trailer are electrically protected.
Specifications
- Brand: NAMZ Custom Cycle
- Manufacturer Part #: NTI-4-5
- UPC: 810088716492
- Connector Type: 4-pin Molex
- Length: 12 in
- Width: 6 in
- Height: 2 in
- Weight: 0.35 lbs
Common questions
Why do I need a trailer isolator for my Harley-Davidson?
A trailer isolator prevents your OEM turn signal module from failing prematurely by drawing trailer power directly from the battery through relays, rather than routing it through the factory module which can be overloaded.
What kind of connector does this isolator provide for the trailer?
This NAMZ isolator provides a 4-wire output with a molded flat 4-pin connector, feeding left/brake, right/brake, running, and ground signals to your trailer.
Is this isolator compatible with my Harley Touring or Softail model?
Yes, this trailer isolator is compatible with many Harley-Davidson Touring and Softail models. For precise fitment, please use our Shop by Bike tool to confirm compatibility with your specific year and model.
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 | 850-09079 |
| WEIGHT | 0.35 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
5
1 RATING
5★
1
4★
0
3★
0
2★
0
1★
0
