On my 1994 Mercedes E320 wagon, I noticed on the front left side facing me in front of the battery, a missing fuse/amp on top. See the color red circle on the photo attachment below. It looks like a missing amp 30 fuse, is that correct? If so, what is the fuse or amp for, anyway? What is the correct amp number, 10, 20 or 30 amp? Any helpful comments/feedback is appreciated.

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It is used when the old analog phones were installed, you don't need it

Really? I did not know that at all. Thanks for responding.

On an unrelated note, if that's a picture of your engine compartment, I'd suggest you take care of that kinked radiator hose!

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Current stable:
1995 E320 149K (Nancy)
1983 500SL 120K (SLoL)

Black Sheep:
1985 524TD 167K (TotalDumpster™)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

No it is not my picture of the engine and mine does not have a klinked radiator hose.