S&S Cycle Ignition System For All 1999–03 Carbureted Harley-Davidson Twin Cam 88 Engines - Manual (Page 4)

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Prior to installation, disconnect and remove the battery, negative cable first. This will eliminate potential sparks and inadvertent
engagement of the starter while working on the motorcycle. C. Removal of Existing Ignition Module:
1. Locate the ignition module installed on your motorcycle. The ignition module can usually be found under the seat or a side cover (See
Picture 3, below left). Refer to the Harley-Davidson® service manual for your motorcycle if you have trouble locating it.
2. Remove the module mounting hardware and unplug the module. (See Picture 4, below right). Each plug is disconnected by simultaneously
pressing the locking tabs on the connector and pulling it away from the module. Save the mounting hardware for installation of the S&S®
ignition module.
D. S&S System Installation
Be careful not to damage the front of the tank when raising or removing it.
It is possible to install the ignition knock sensor assembly, engine temperature assembly, and wiring harness without removing the fuel tank.
Loosen (do not remove) the bolt at the front of the tank, and remove the mounting bolt(s) at the rear of the tank. The rear of the tank then can
be raised slightly, allowing enough room to install these components.
NOTE: Clearances are limited at the front of the tank. Use care not to damage any painted surfaces while handling tank.
Installing components without removing the fuel tank is a timesaving suggestion only. If there is any reservation on the part of the installing
mechanic about performing this installation with the fuel tank in place, refer to the appropriate Harley-Davidson® service manual for correct
procedure for removing fuel tank and related components.
1. Installation of the Cylinder Head Temperature Sensor
NOTE: The S&S Cylinder Head Temperature Sensor for mounts in a boss found on the front head of all Harley-Davidson® Twin-Cam 88® engines. This boss is
used for mounting the Engine Temperature Sensor on fuel-injected Harley-Davidson® Motorcycles. On carbureted models, the hole is plugged.
a. Remove the plug and install the S&S Head Temperature Sensor.
b. Tighten the sensor to 10-12 ft-lbs using a deep well socket and a torque wrench. See Picture 5, next page.
C. Removal or Existing Ignition Module:
Picture 4 Picture 3
WARNING
WARNING