Ultracool 4-Pin Deutsch Connector Harness - All Milwaukee-Eight Models
About Ultracool
Ultracool parts and accessories are stocked at Vtwinbikers for Harley-Davidson and Indian Motorcycle applications. Every Ultracool item we list is new and sourced through authorized distribution. If you are not certain a part matches your year and model, use Shop by Bike or email our team before you order and we will confirm fitment first.
This Ultracool 4-pin Deutsch connector harness simplifies adding aftermarket electrical accessories to your Milwaukee-Eight Harley-Davidson. It provides fused battery power, ignition/accessory power, and ground from the factory three-pin Molex P&A connector.
Why riders pick this
- Simplifies adding auxiliary power to Milwaukee-Eight models
- Supplies battery, ignition, and ground connections
- Allows simultaneous operation of two accessories
- Durable 4-pin Deutsch connector output
- Integrates with factory 3-pin Molex P&A connector
- Includes a 15-amp fused circuit for safety
When you're upgrading your Milwaukee-Eight Touring or Softail, adding electrical accessories often means tapping into your bike's wiring. This Ultracool 4-pin Deutsch connector harness makes it clean and reliable, drawing power from the factory P&A connector to a standard Deutsch plug. No cutting or splicing into your main harness, just plug-and-play power for your next upgrade.
Reliable Power for Your Accessories
- Provides battery, ignition/accessory, and ground connections for easy hookup
- Allows two accessories to operate simultaneously with the ignition in ON or ACC
- Features a durable 4-pin Deutsch connector output for secure connections
- Integrates directly with the factory three-pin Molex P&A connector input
- Includes a 15-amp fused circuit for enhanced safety and protection
Streamlined Accessory Installation
This harness is engineered for a straightforward installation, making it easier to add anything from extra lighting to heated grips without complex wiring. It's an essential component for riders who demand reliable power for their aftermarket electronics while maintaining the integrity of their factory wiring. Confirm fitment for your specific Milwaukee-Eight model before ordering.
Specifications
- Brand: Ultracool
- Manufacturer Part #: SMB-Y128
- Length: 8 in
- Width: 6 in
- Height: 0.5 in
- Weight: 1 lbs
Common questions
Will this harness fit my Twin Cam or Evolution model?
No, this Ultracool 4-pin connector harness is specifically designed for 2017 and newer Harley-Davidson Touring and Trike models, and 2018 and newer Softail models, all equipped with the Milwaukee-Eight engine.
What kind of accessories can I connect with this harness?
You can connect any aftermarket accessory that requires battery power, ignition/accessory power, and ground, and uses a 4-pin Deutsch connector, up to a combined 15-amp draw.
Is installation difficult for this connector harness?
This harness is designed for a plug-and-play installation into your factory P&A connector, simplifying the process of adding auxiliary power without cutting into your motorcycle's main wiring.
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 | Ultracool |
| TYPE | Electrical |
| SKU | 56-7263 |
| WEIGHT | 1.0 lb |
