S&S Cycle IST Ignition System for 1984-1999 Big Twin and Custom Applications - Manual (Page 8)

l. Visually align the holes in the sensor plate with the pins in the sensor cup. Gently slide the sensor plate into position onto the alignment
pins. See Picture 11, above right.
m. Install the two hold down screws. Use Loctite® 243 on the first three threads and tighten screws alternately a little at a time until secure.
(12-20 in.- lbs.). Use care not to bind the alignment pins while tightening the hold down screws.
n. Remove alignment pins from plate.
The alignment pins may have some resistance to removal, but both pins should pull out smoothly and evenly. If the pins are difficult to
remove, the stand off screws must be loosened, the plate re-positioned, and the screws re-tightened until the components are correctly
aligned. The alignment pins serve dual purpose: They establish the timing baseline, and center the sensor plate in the cup. The clearance
between the cup “teeth” and the sensor plate is very small and it is of the utmost importance to align this assembly correctly. The dowel
pins must be used every time the cam position sensor is removed and installed, and also any time the hold down screws are tightened.
Torque from tightening the screw heads can twist the plate out of position.
o. Attach points cover to hold down screws and tighten until secure. (12-20 in-lbs.).
p. Attach connectors to Camshaft position Sensor wiring “pigtails” that were routed through the nosecone gearcover earlier. Wires will “click”
into position when fully inserted into the connector. Test with a slight pull on the wire. Insert locking wedge into end of connector. See
Picture 12, below.
8
Picture 10
Alignment pin hole locations for initial timing. Pin holes
must be located as pictured, at Top Dead Center of the
compression stroke of the front cylinder
Big Twin
Picture 11
Alignment pin locations for initial timing. Big twin is
shown on the left, Harley-Davidson® Sportster® model is
shown on the right.
CAUTION
Picture 12
Cam Position Sensor Long Pigtail
Position 1 marked
Positions A, B, and C marked
Locking Wedge
1
A
2
B
3
C
Cam Position Sensor Short Pigtail
white
white/blue
white/black
white
white/orange
white/blue
Sportster® models