You already have a special tool. It's your right hand. Grip the connector sheath firmly give it a slight twist and pull gently, it should come right off. If it doesn't come right off, then the rubber insulator inside the connector is frozen on the plug. You can get them off but, it may require some effort. There is a tool made for this purpose and I have used it. Only offers a slight mechanical advantage. Not worth the $$$ to buy. If the insulator is frozen on the plug, it will break no matter what you do. If you get them off successfully without damaging the rubber, get some silicone grease and lightly apply some to the white insulator on the plugs before reassembly. Will make future efforts much easier. Do NOT pull on the wires themselves. The metal sleeve is what you need to grasp.
1987 BMW 325
[This message has been edited by jeffsr (edited 04-09-2000).]