How do you remove the ignition coil cap?
 

I'm going to be tuning up my '92 190E and I'll be replacing all of the wires. When it comes to replacing the wire running from the distributor cap to the ignition coil I will need remove the plastic cover on the ignition coil. Is there any trick to removing the cover? I tried pulling on it a little bit but it won't budge. Thanks!

Below the point where the wire enters the cap are snaps that hold it together. Stick a wide flat screwdriver between the two snaps and turn (prying the snaps apart). They will pop open and the cover comes off easily.