RE: Electric Choke
Hook the Positive wire to any 12-volt power source that is switched on with the ignition EXCEPT the coil or the alternator - Hooking it to the coil wil fry the choke and hooking it to the alternator will damage your charging system - Trust me on that one, I did it, and had to rewire the entire engine compartment, and hook the other wire to a ground source - basically any bolt on a grounded piece of metal. I hooked mine up to the turn signals up under the dash. Another good source is the radio. Also, use an inline fuse so in case something goes wrong, the fuse blows and the choke doesn't.
Hope this helps.