In the first picture, the long black box is the heater fan fuse, rated at 30 amps.
I'm not sure about the relay to the right of the fuse holder, though.

The left item in the third picture is the OVP, or Over Voltage Protection relay, and usually has a 10 amp fuse under the cover.

I'm not absolutely sure on the rest of them. I *think* that the right item on the 4th picture is the fuel computer, but I'm not sure on that one.

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-Josh
Testing the cheap Mercedes axiom, one bolt at a time...