PLEASE HELP IM IN DIRE STRAIGHTSNo spark MSD but test fine what am i missing!
Remove the green wire and cap it.
You'll need to figure out what the previous owner did there. That's an F_Up.
The heavy black wire connection is better on the engine but it should work as drawn.
The MSD 6 unless they've got junky will start with far less than 12 Volts. Go place a voltmeter on a battery when starting and you'll see what it draws down to under the load of the solenoid and starter. if its 10 Volts, that's still decent. If its 9 Volts - the battery is weak.
Green Wire is likely the alternator field wire that connects to the regulator.
If it is connected to the alternator's field terminal, and the wire is grounded, the field will draw maximum current and there will be problems. At best there will be system over voltage and some things will burn out.
Check both ends and make sure they are connected.
Then make sure the battery is charged on a charger - because if it was low, and then the alternator is running, the battery will suck a ton of current. You'll see that on the ammeter (aka alternator gage). If that gage pegs, shut down. If that gage shows halfway in either direction and doesn't head back toward zero in a minute or two, shut down.