Ignition is still on when key is at accessory position.

does the car run?

off acc run start

power is switched by your key to ACC first
then to RUN
then to start momentarily while you run the starter

4 wires
1 is power into switch the other 3 are feeds out



in theory if you had the wires wrong i.e the RUN wire on the ACC connector on the switchand the ACC wire on the RUN connector

when you get to ACC there is power to the ignition system which will stay powered when you switch to RUN and start

Do the things that are normally work when the switch is in ACC or RUN NOT work when in ACC? if they don't then your ACC and RUN wires are mixed up on the switch

Basically if they work when in RUN but not in ACC
yeah we got it sussed

the ignition switch is an OFF ON ON/ON

OFF is off
ACC in on
then ACC and RUN are both on when the car is running
but when starting on some switches ACC is ON, RUN is ON and Start is ON when starting
in other switches ACC is off when RUN and Start is ON to reduce load

if you switch is like the first one then you car will mostly operate as you expect with the ACC and Run wires swapped at the switch

OR

you can cause strange problems if you have a wire connected to the back of the fuse box in the wrong section
fuse box is in 2 parts
you have a few fuses powered all the time and you have fuses only powered when the switch is in ACC or RUN

bridging the 2 parts via an incorrectly connected wire or a deliberate bridge (a get me going breakdown work around after a small electrical fire) can cause peculiar behaviour