Hey i have a problem I have gotten all of my harness plugs out accept 2 hat wont budge there the ones in the back of each head
here is a pic of te passenger side.
Its the green harness plug.

driver side

 

looks like the camshaft postition sensor

http://www.g35frenzy.com/downloads/2...anual/B/ec.pdf

pages 264-271

 

There is a push tab on it. Push it in with your finger, and then you can remove the connector.

FYI, I assume you are removing your engine. In which case, from my experience, its way easier to just unplug your ECU, and pull the harness up through the firewall and rest it on your engine. It takes about 5 mins to do this, rather than fighting every connector off your engine.

 

yea i tried pushing the tab in but didnt work. I ended up just un bolting it. also even if i did take the hrness from the ecu idk why but the Z harness upper and lower are not joined by a conector its just one large harness.

 

After you push the tab in, if you still cant get the connector off, just use a very small flat screwdriver and use some gentle leverage to remove the connector.