Sorry, I'm quite brain-thick lately, I didnt' understand your question.
You said: "I lost some little springs, I wonder wether other switches will work in my bike". I understood: "I lost some little springs, I wonder if the springs from other switches will work". That's why I said "give them a try".
The switches from later models should work, as long as there is "electrical correspondence". Early models had individual bullet connectors, so it is just a matter of identifying what goes where, and do the connections. If later models had block connectors -which saved time at the assembly line- they you must either cut the wires and install bullet connectors, or build an adaptor if you don't want to modify the original switch.
I have used Honda switches in my spanish-made Sanglas, which had block connectors at the headlight nacelle. What I did was to find out the wire correspondence, and solder a connector block. They work just right.
