If you’re experiencing issues with your Harley Davidson motorcycle’s twist grip sensor or looking for a wiring diagram, you’re in the right place. In this article, we’ll discuss the twist grip sensor in detail, the wiring diagram, and frequently asked questions about it. Read on to learn more!
What is the Twist Grip Sensor?
The twist grip sensor is an essential component of the Harley Davidson motorcycle’s throttle system. It helps to relay the movement of the twist grip on the handlebars to the motorcycle’s engine control module (ECM). This, in turn, controls the motorcycle’s acceleration and speed.
Harley Davidson motorcycles come with two different types of twist grip sensors: the old-style sensor and the new-style sensor. The old-style sensor was used on motorcycles manufactured before 2008, while the new-style sensor is used on motorcycles manufactured from 2008 and later.
Old-Style Twist Grip Sensor
The old-style twist grip sensor is located on the right handlebar grip, and it has a two-pin connector. The sensor’s wiring diagram consists of two wires: a yellow/white wire and a black wire.
The yellow/white wire is connected to pin 1 on the connector and goes directly to the ECM. The black wire is connected to pin 2 on the connector and is grounded.
The old-style twist grip sensor is not compatible with newer Harley Davidson motorcycles, and it’s not recommended to replace it with the new-style sensor.
New-Style Twist Grip Sensor
The new-style twist grip sensor is located on the right handlebar grip, and it has a six-pin connector. The sensor’s wiring diagram consists of six wires: a yellow/white wire, a black wire, a grey wire, a green wire, a red/white wire, and a white wire.
The yellow/white wire is connected to pin 1 on the connector and goes directly to the ECM. The black wire is connected to pin 2 on the connector and is grounded.
The grey wire is connected to pin 3 on the connector and goes to the ECM’s powertrain relay. The green wire is connected to pin 4 on the connector and goes to the ECM’s battery voltage supply.
The red/white wire is connected to pin 5 on the connector and goes to the ECM’s throttle actuator control motor supply. The white wire is connected to pin 6 on the connector and goes directly to the ECM.
Harley Twist Grip Sensor Wiring Diagram
Below is a detailed wiring diagram for the new-style twist grip sensor on a Harley Davidson motorcycle:
| Pin | Wire Color | Connected To |
|---|---|---|
| 1 | Yellow/White | ECM |
| 2 | Black | Ground |
| 3 | Grey | ECM Powertrain Relay |
| 4 | Green | ECM Battery Voltage Supply |
| 5 | Red/White | ECM Throttle Actuator Control Motor Supply |
| 6 | White | ECM |
FAQ
What are the symptoms of a faulty twist grip sensor?
A faulty twist grip sensor can cause various symptoms, including engine stalling, sudden loss of power, and acceleration issues. If you’re experiencing any of these issues, it’s recommended to get your motorcycle checked by a professional mechanic.
Can I replace the old-style twist grip sensor with the new-style sensor?
No, the old-style twist grip sensor is not compatible with newer Harley Davidson motorcycles, and it’s not recommended to replace it with the new-style sensor.
How do I test the twist grip sensor on my Harley Davidson motorcycle?
To test the twist grip sensor, you’ll need a multimeter. Set the multimeter to the resistance setting and test the sensor’s resistance between the yellow/white wire and the black wire. The resistance should be between 3.3 and 4.7 ohms for the new-style sensor and between 185 and 215 ohms for the old-style sensor.
Can I replace the twist grip sensor myself?
Replacing the twist grip sensor requires some technical knowledge and skill. If you’re not familiar with motorcycle mechanics, it’s recommended to get your motorcycle checked by a professional mechanic.
How often should I replace the twist grip sensor on my Harley Davidson motorcycle?
The twist grip sensor doesn’t have a specific replacement interval, but it’s recommended to inspect it regularly for signs of wear and tear. If you’re experiencing any issues with the sensor, it’s recommended to get it checked by a professional mechanic.
How much does it cost to replace the twist grip sensor on a Harley Davidson motorcycle?
The cost of replacing the twist grip sensor on a Harley Davidson motorcycle can vary depending on the model and the location. It’s recommended to get a quote from a professional mechanic before proceeding with the replacement.
