ididit Retrofit Steering Column: 1962-66 Nova - Manual (Page 8)

Gearbox Installation:
Slide the seal down the column and align the screw holes for
the seal to the firewall holes. Install the 4 screws with the large
washers.
Make sure the dash mount’s alignment tab is engaged and secure
the dash mount with its two fasteners. (see figure 4 on page 5)
Install the lower trim piece on the column and work it into place.
Synchronizing your Steering Column:
On the top of the steering column there is a white plastic piece with
a male tube sticking up from it. This is called the horn cam. On an
ididit column this should be centered between 10:30 and 11:00
with the front wheels straight. This will make the column cancel
its turn signals with equal turns of the steering wheel. To properly
synchronize your column twist the horn cam until the male tube is
between 10:30 & 11:00. It will have some tension but you can spin
it by hand. Note: Do not try to twist the horn cam with the male
end, grab the complete piece and turn. (Figure 7)
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(Figure 7)