Motorcycle Wiring Harness
Motorcycle Wiring Harnesses
There is a lot of discussion about wiring harnesses for motorcycles that tow a trailer. We make motorcycle trailer hitches for over 290 different motorcycle models. Everyone of these bikes requires a wiring connection to the trailer they want to pull.
There are three things you need to think about. How are you going to connect to the motorcycle's wiring harness; where is the power going to come from; and do you require a converter.
For many years, the only way to connect your bike's wiring to the trailer wiring was with a 5 wire to 4 wire converter. This converter uses your bike's wiring to supply the power for the trailer lights. Our 5 wire to 4 wire converter is available as a stand-alone item and comes with a flat 4-pin plug.
Stand alone converter
Order the 5 wire to 4 wire converter for $28.00 including free shipping
Order the Harley Davidson Quick Connect QC-4 for HD FLH.... models $43.00 including free shipping.
Or you can order both as a kit for $60.00 including free shipping. (Save $11.00)
Isolator type Modular Wiring Harness
With the change to fuel injection, ABS brakes and onboard computers, a new system was needed to work with these electronics.
THE WIRING HARNESS MODULES
We use a 3 piece modular design of separate Isolators, Sub-Harness connectors and Converters.
You can use one, two or all three modules to build your own custom application.
All the modules have connecting plugs so they can be joined together without needing to splice wires together.
Just plug each module into the next one.
At the end you have the Isolator with 5 wires that have to be
connected to your plug that matches the plug on your trailer.
Build your own plug-n-play wiring harness
THE ISOLATOR SKU 7660
Trailer isolators easily and properly connect your trailer's lighting
while removing the electrical load from the motorcycle's factory
wiring, fuses, relays computers and other electronics.
The Isolator is the main component. Ours are made in Tennessee,
The Sub-Harness connects to your bike on one end and the Isolator
USA. The Isolator receives a signal from your motorcycle's
wiring and it switches a relay and takes the appropiate power direct
from the battery and not from the bike's wiring harness.
There is no extra amperage (power) flowing through the bike's
The wires don't get hot, and there is no surge flowing through your bike's computer or ABS system.
or 5 wire to 4 wire converter on the other.
This makes the connection "Plug & Play" so you don't have to splice.
In order to make a complete kit, you must order the 7660 Isolator
and one sub-harness as listed below:
SKU 7667 Harley Davidson most 1997 and up FLH models
THE 5 WIRE TO 4 WIRE CONVERTER SKU 7664
Most motorcycle have a 5 wire system, using a single brake light
SKU 7668 Yamaha Royal Star Venture
SKU 7662 Honda Gold Wing 2001-2011
SKU 7672 Honda Gold Wing 2012+
SKU 7663 Universal kit
SKU 4656 Includes SKU 7663 for bikes with 6 pin connectors (i.e. Suzuki C50).
in the center of the rear fender.
See a complete explanation click here.
If your trailer has only 2 lights on the rear, you need a converter.
If your trailer has 4 lights on the rear, you do not need a converter.