Yes, obviously I'm pretty new to this, and as I'm trying to diagnose different things on my 1980 450SL, I am reading a lot about different engine components, sensors, regulators, etc. I still don't know exactly what is what, so I'm trying to figure out what parts people are talking about.

Does anyone have any diagrams that help identify all of the different parts of the engine, specifically for ignition and fuel delivery? I have read about WUR, ECU, triggers, valves, etc etc but I don't how to identify them on my car. I've taken a look at the shop manual, but it hasn't been very helpful with an overall view of the components.

Thanks!