If you get a Weber with an electric choke, you may use the 4th wire or run a separate switched power wire from the ignition switch.
If you get one with a water choke, then NO.
The one wire alternator set up is the worst upgrade you can do.
The third wire for warning light is a very important feature.
The second wire which is the remote voltage sensing feature is also important.
Get a three wire alternator set up and it will be very efficient and less troublesome.
Do a research on 1-wire versus 3-wire alternator set ups.
well i got a 1 wire so why do i even need the others can i just get a weber and run the power wire only???
and that choke heater wire does it have to be used?