This is the spark plug port with the plug removed. The module is adjacent in the picture. Please note: check the overall length of the spark plugs you intend to use by comparing them with the old ones. I found that some of the manufactures don't make them a little shorter and this could cause a misfire with the contact in the ignition module. It's like a spring contact in a flashlight and needs the length to make contact. If the module isn't held up by the force of the spring before tightening them down, check the length on the plugs. Reassemble in the reverse order and you've got it. I would suggest using the AC Delco Iridium plugs. They made my H3 purr like a kitten at 111K.