would this work ? ignition switch query...

[byron]

using vespa 5-pin rectifier.
running lights AC
horn, other stuff DC

so [thanks to firekdp for the tip], will use the C terminal on the rectifier unit to control the voltage to the battery, which needs to be connected to a live DC circuit when in use, but isolated from this when the scooter is not running to avoid draining the battery.

if a "standard" [Casa in this case] ignition switch is used, could the rectifier C be always connected to the accessories power supply, which is then connected to the battery +ve when turning the key [say using the purple/black connection], and then the AC lights be turned on with the last click of the key [so using brown/orange]

or is that too much AC/DC mixing...?

the alternative is use the key to switch just the DC circuits and always have the AC lights on whenever the engine is running...

[firekdp]

So use the purple as a DC feed into the switch and tapping off of the black to get a switched live for the "C" and other DC accessories?
If the Casa switch is based on the Italian design, then no. If it is based on the Indian design then yes.

[byron]

thanks again firekdp
I was basing my theories on wiring up Indian switches.
So what is the Casa switch like.... anyone know ?
would guess Italian [?], but never can tell...
get on with those tests Bilko !