G2 runs rough

[Besseyauto]

Hi, I am new here and have a g 2 golf cart. I replace the starter and when I plug in the red and green wires coming out of the side of it it will not run it all if I unplug them it runs rough. Could I have a bad starter or a wrong starter? I think I may have gotten a starter for a newer g 16. Could that be my problem? I changed the oil and spark plugs and cleaned the carburetor. I also drained all the gas out put new gas in and a new inline fuel filter. I remove the exhaust and checked for blockages.