Whatever dude, I've been a tech for 45 years now and worked on them when they were brand new and owned plenty over the years. What you just described sounds more like a bad ground. Which can burn out a fuse link. Something those old D and W series are famous for. Bob however is asking about a B van. Similar but different.
Ya know you don't have to thump your chest everytime someone disagrees with you Mr. Mercedes Parts Counter Man. Ok?
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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