1979 mb 300sd - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 06-22-2010, 07:58 AM Thread Starter
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1979 mb 300sd

hi there- just bought a 1979 300sd in good condition. I have very limited mechanical knowledge so forgive the newbie! A few questions:

1. I have what looks to be a block heater hanging from the front of the car, it has a weird 2 prong plug that I am not sure how it works. I tried to upload a pic

2. I have a rattle coming from the trunk area when I go over bumps- before I put my 14 year old son in the trunk with a flashlight for a ride is there anything that is common to check in these cars?

I am sure I will have more questions in the future- love the site! Thanks in advance Steve
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post #2 of 3 (permalink) Old 06-22-2010, 10:29 AM Thread Starter
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Update- after some investigation, I believe it was the spare tire or jack not secured, problem solved. For the block heater though, i found the 3 prong household plug tucked away, but still cant figure out where the red thing goes.
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post #3 of 3 (permalink) Old 06-26-2010, 08:40 PM
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Vehicle: 1987 Mercedes 300SDL 92k
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The two-prong end plugs into the engine block.
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