LC-1 WBO2 Quick Install Guide

Fits 2007/2008 Harley-Davidson®

We will frequently expand this page as improved installation techniques are discovered.
Last Update 01/13/2008

See our installation Video on Google. Click here to watch.

This installation guide assumes that your LC-1 has been pre-programmed. If the pre-programming was performed by Nightrider.com Performance Products, the calibration of the WBO2 sensor has already been performed and the air fuel ratio is normally set to 13.5:1. The AFR will be marked on the upper left corner on the front of your LC-1 boxes.

1. Mounting the two LC-1’s:

A. Disconnect the OEM O2 sensors from the HD wiring harness. Remove the OEM O2 sensors from the front and rear exhaust pipes. Replace them with the WBO2 sensors included in your upgrade kit.

B. Find a suitable location under your vehicle where the LC-1 body can be mounted. Using zip ties or other suitable method, fasten the body of the LC-1 device securely to the frame rails or other mounting points as far away from the heat of the exhaust system as the sensor cable allows. DO NOT zip-tie the LC-1 by the cables.

Simplified LC-1 mount locations and installation notes.

The preferred location for the front cylinder LC-1 will be on the lower right frame rail toward the inside of the bike. The preferred location for the rear cylinder LC-1 will be on the lower right frame rail toward the inside of the bike.

2. Routing the Cables:

A. Route the cables from the LC-1 controller box (except sensor cable) to the fuse panel on your motorcycle. Make note of which wire is from the front cylinder and which is from the rear.
We recommend you label or color code your wiring. Different color tie wraps work very good for this.

B. The two thin cables are for computer communications to the LC-1. DO NOT CUT THESE CABLES.

3. LC-1 Main Cable connections:

A. Most LC-1 Interface/power cables have 6 stripped ends*:

a. Red 12V supply – Connect to pig tail on supplied Fuse Tap

b. Blue Heater Ground – Connect to chassis ground

c. White System Ground – Connect to chassis ground

d. Yellow Analog out 1 – Connect to Blue wire on supplied O2 wiring harness adapter

e. Brown Analog out 2 – Optional Can be used with Digital Air Fuel Gauge or with Scan Tool, otherwise tape wire end

f. Black Calibration wire – Optional Connect to LED / Re-calibrate switch, otherwise tape wire end

-. Silver ground wire – Optional ground wire. This wire is seen if you shorten the LC-1 primary wiring harness.

B. Serial In connection, 2.5mm stereo (female) marked as IN

C. Serial Out connection, 2.5 mm stereo (female) marked as OUT.

4. Connect the RED wire to a switched 12V source in your vehicle. A switched 12V source goes on as soon as the ignition on the ignition is on. Make sure the connection is fused with a minimum fuse size of 10A for two LC-1’s.
Nightrider provides a Fuse Tap “add a circuit” which can provide power to the LC-1’s without cutting OEM wiring. Any switched circuit can be used, however the Lighting circuit makes a good choice. Make sure to put the “pig tail” end of the Fuse Tap on the fused side of the circuit. This can be checked by removing the extra circuit fuse, turning on the ignition switch on the bike and checking for voltage at the pig tail. If the pig tail has power, reverse the fuse tap. Now you can install the 10A fuse in the Fuse Tap.

5. The BLUE and WHITE wires should all be grounded to the same ground source. Optimally, these (and any other MTS device ground) will be soldered to the same lug, and connected to a single point. When this isn’t possible, connect each one to a separate lug, and attach in close proximity. Multiple lugs on the same bolt is not optimal, and can result in

unwanted signal “noise.” When possible, soldering is always better than crimping. Please see chapter 2.3 for more information on Electrical Grounding Concerns.

6. LC-1 Outputs:
A. the YELLOW (Analog out 1) connects to the Blue wire on the HD O2 wiring Harness Adapter. The Grey HD O2 wiring Harness Adapter wire goes to ground.
B. optional BROWN (Analog out 2) can be connected to the analog inputs of other devices such as data loggers, ECU's, or gauges. If either one or both of these wires are not being used isolate and tape the wire(s) out of the way. Analog output two is setup as 0V = 7.35 AFR and 5V = 22.39 AFR. This is the wideband sensor output. Output from this wire can go to a Nightrider supplied digital Air Fuel Gauge or to the WBO2 input wires on the Scan Tool. Output can also go to any data acquisition device.
Note: The LC-1’s heater ground and system ground wires should share the same

grounding location of the analog input’s ground.

7. Optionally connect a momentary push-button switch between ground and the BLACK calibration wire. Please refer to section 2.1.

8. Optionally connect a indication LED (1.2-2.2V, 1-30mA is recommended) between the calibration wire and ground. Please refer to section 2.1

The LED will communicate the LC-1’s status. To monitor LC-1 status, connect the red wire (Anode) of the included LED to the calibration wire (black) of the LC-1 and connect the black wire (Cathode) of the LED to the ground wire of the momentary switch. The grounds to both the cathode side of the LED and the Push button should be connected with the Heater ground.

a. Note: The included LED will fit the following hole size and panel thickness: a 5/32” (0.155” - 0.158”) hole size and a panel thickness of 28–16gauge (0.031” - 0.062”).

b. Optionally, any 1.2V - 2.2V (1mA- 30mA) LED may be used. A typical LED has 2 wires called Anode and Cathode. The Cathode side is typically the shorter of the 2 wires or the black wire.

Pressing the push-button or connecting the black wire to ground (a three second press is required with firmware version 1.10) starts a free air calibration process in the LC-1. MAKE SURE THE SENSOR IS IN FREE AIR FOR THAT. See chapter 4 of the LC-1 Manual for details.

Other technical guides for LC-1

LC-1 Technical Manual (Innovate Motorsports)

LC-1 Quick Install Guide (Innovate Motorsports)

Disclaimer
For Race Purposes Only. These devices may not be legal for street use on pollution controlled vehicles. Check local laws and regulations to ensure compliance.
The LC-1 WBO2 is a product of Innovate Motorsports. Warranty information for the LC-1 is available on the www.innovatemotorsports.com web site.
SPMULLEN LLC warrants its own Nightrider.com Performance Products against defects in factory workmanship and material for 30 days from the date of purchase with proof of purchase or until ownership in the part is transferred. The manufacturer and seller make no warranties express or implied which extend beyond the description of the goods contained herein. Any description of this product is for the purpose of identifying it and shall not be deemed to create an express warranty. SPMULLEN LLC shall not be responsible for any consequential, special or incidental damages of any nature, including but not limited to the loss of use of any vehicle on which the unit may be installed and the cost of obtaining substitute components.
Harley-Davidson is a registered trademark of Harley-Davidson, Inc. Model designations for Harley-Davidson Motorcycles are used for reference purposes only. This part is not manufactured or endorsed by Harley-Davidson.

Quick Links

Nightrider Performance Parts is a Service Mark for SPMullen LLC
Copyright 2007-2008 PG Mullen, SPMullen LLC, Oldsmar, FL 34677