Warning – S&S Cycle IST Ignition System for 2004-Up Harley-Davidson Models User Manual

Page 4

This is a supplement to instruction 51-1136. The 51-1136 sheet details installation on 1999-’03 motorcycles equipped with Harley-
Davidson® Twin Cam 88® engines. If you did not receive that sheet in your packaging, please visit the S&S® website, www.sscycle.com to
download a copy. You can contact the S&S Tech Department to get a copy by calling (608) 627-8324.

a- Bracket

d- 1⁄4-20 x 1⁄2" cap screw

g- 1⁄4-20 x 1.0" cap screw (from stock module mount)

b- 0.600" spacer

e- 1⁄4" lock washer

h- 0.200" spacer

c- 1⁄4-20 nut

f- 1⁄4-20 x 1.5" cap screw

D- Sportster® models
1- The module will mount directly in place of the stock ignition module. Pay close attention to harness routing, as space is very limited.
12- See Instruction Sheet 51-1136 for starting instructions outlined on page 8.
13- Calibration of the gear factor may be necessary for proper speedometer operation if your gearing has been changed. This is possible with the

use of Guardian Software. Contact an S&S® Dealer or see www.sscycle.com for details on Guardian.

14- The method of counting flash codes on the check engine light for advanced troubleshooting, as noted in section G of instruction 51-1136, is not

supported on model year 2004 and up vehicle harnesses. Using a temporary jumper to connect IST pin 12 to ground will enable diagnostics with
the check engine light. Diagnostics of the IST system may still be performed using the S&S® Guardian system or a code reader (Scantool).

15- The adapter harness schematic, shown in Diagram 1 on the next page, may be helpful for installation and troubleshooting.

Picture 8

Picture 9

f, e

WARNING