I thought I had ACC/OFF/On/Start.....right up until the point where the Fiat switch (Marelli) broke and almost burned my car up!
But then my CRS could be acting up today.....
Now I have a tractor switch.....generic sort of NAPA switch. With ACC.
Don't bother with the new switches made in China, sold on Ebay UK from a guy in Greece....they are crap....or at least the switch action is very rough....doesn't give me great confidence.
There are some posts, if you search, on this topic, with part numbers of more generic versions that have spade connections on the back. Very little fuss..... I had to adapt 90 degree spades to posts....only because I was broke down near the middle of nowhere....and that was all that was available. Been working excellent for several years now!
Indications of a failing switch? It gets hot during use, ie headlamps on.....
New one is cool as a cucumber....!
Steve