This is going to sound like a stupid question, and the mechanics amongst you will be laughing out loud.
I wanted to have a look at the condition of the injector plugs, but I cannot seem to find them

Am I right in assuming that there should be 4 of them around the injector rail?
They should look like this:
(the 4 connectors on the left)

On a 407, google image search shows this:

I assume thats them? I can see similar going into my engine block, the connectors though are more like rubber boots and say "Siemens" on the side. I wanted to make sure they weren't the glow plug leads and I wasn't looking at the wrong thing!
Cheers