replacing the number 4 ignition coil on my 2000 Maxima and am unsure where it is located. I know side closest to radiator but leftmiddle or right when facing engine.?

The number 4 ignition coil on a 2000 Maxima is located on the left side when facing the engine, right next to the radiator. If you are standing in front of the engine and are facing the radiator with the engine on your right, the number four ignition coil should be on the left of your field of vision.