Hi dirtysocks,
The suppressor cover goes begind the rotor button that is attached by three small allen head screws. Unless your's is cracked, you simply don't need a new one, nor the gasket o-ring if yours is in tact and not dryrot or broken.
Remove the cap with three allen head screws that hang in the cap (you won't loose them) and remove the wires one at a time if you are not sure, and if your wires are not numbered, but the cap cover (black plastic cover on the red cap) is numbered, and from the front of the engine, cylinders start as #1 and go to #6 in the rear to the engine.
#1 question reply: It's a simple job, but make sure you get a Bosch cap & rotor, and don't accept any other brand (like I had to do when I had my cap crack because of the camshaft breaking on me...long story...not my fault
). You will most likely find the best deal right here on FastLane. Aftermarket caps are just not the same as Bosch. One screw on the bottom of the cap, and one on each side.....3 total screws to remove and the cap is off. Be careful not to crack or break the cap & rotor and you can save them for spares in the trunk.
#2 question reply: replace the rotor....the "drive dog" (behind the rotor) as it is referred to in the English W124 book is fine if it's not broken. It's $20.00 at the dealer. The dealer calls it "that part"....at leastthey did when I showed them what I wanted, and did not have a specific name at the time for it.
#3 question reply: ball ends are not required, as they are used best in electrical work, but the non-ball ends are best. Just don't strip the allen heads with the ball end.....thats the lastthing you want to do.
#4 question reply: twist the wires and then pull one at a time off, or number each wire with masking tape for peace of mind if you are uneasy about changing the wires.
As far as your broken line is concerned, is it a small line, or a larger black line from the top of the air cleaner housing that connects to the valve cover? Either way, search for it on FastLane (here on this forum) and you will be able to purchase the correct replacement. The rigging is ok for temp. fix.
Hope this helps you, and glad your engine runs well. My fuel tank had rust sediment that clogged my fuel distributor, so it's down right now
.
Take care.