regulator/rectifier instalation on 74 z1 900

ok im finally getting around to swap my old rectifier/reculaor with a one peice combo from jeff at Z1. What's involved in getting the old one off. Im going to put the new one in, because recharging the battery every week or sooner just plain suck's. I hope this fixes my charging problems.

OK now im officialy stumped, i went to take off the old rectifier under the battery box, that was a P.I.T.A. Now my question is, the old regulator has 2 bullet connectors and a white plug the plugs into the connector pannel. The new one is a rectifier/regulator, and the only connectors is a green plug for the rectifier that plugs into the connector block, a white wire with 2 female plugs, and a ground wire, but there is no white plug to plug into the conector block. Should i plug everything in and just leave the old regulator in place along with the white plug plugged into the connector block?????????????? IM CONFUSED..................can anyboby help.........................thanks