There is no accessory switch position in any of these switches.
Check attached photos
Factory Set-up for 49-53 ignition switch, Two position ON - OFF
11:00 o'clock position OFF
.1:00 o'clock position ON
There are three terminals.
A. One terminal feeds voltage to the switch.
B, C. terminals receive voltage when the key is switched ON
B and
C are internally tied together..
That said, if you feed voltage to the switch by connecting to
B.
C will also receive voltage and vice versa.
But the key ON position will become OFF and OFF will become ON . The ignition will be reversed..
And you will only have one switched terminal with voltage instead of two.
GM film strip,Three Position ignition SwitchIgnition Switch Changes Jim Carter tech article.
The Jim Carter article differs from the film strip. Third paragraph. Reason why may be on how the switch is wired.
Three position switch The one Hotrod Lincoln was talking about. 1950 GMC . 1:00 o'clock position OFF UNLOCKED
Two position switch 11:00 o'clock position OFF
There is a possibility that you may have a three position switch housing with a non-teardrop lever key cylinder.
The thing is, both type of switches work essentially the same ON - OFF, The only difference is, the teardrop lever switch has a OFF LOCKED position
11:00 o'clock position OFF LOCKED
12:00 o'clock position ON IGNITION
.1:00 o'clock position OFF UNLOCKED
47-48 Ignition switches THREAD for more info.
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