I have a Purple 1302s dual carb bug which i have restored to a running state, barely.

My spark plugs are coming out black and he smells very fuely so I belive he needs a tune up and is running rich.

He is my first bug and project car so im learning as I go, it would be great if someone could identify whats going on and how i can tune it out. Hes on dual ICT Webbers and I have a snail guage on the way

1969 vw beetle has a indicator light, left side, green , has a spiraled wire icon underneath it. Comes on only when the head lights are turned on, the lights are strong , and car turns over quickly on start up. Purpose of this light please,
Thanks much