Thanks Brian. So I just put the new battery in my car. I went inside to turn it on and put the key in the glow plug position and nothing happened. The light dimmed so much that it was almost off and the dash lights didnt really come one. I tested the battery and it read 10.6 volts. Don't really know how that happened but I will be going back there tonight

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W126 1983 300SD 286,000 miles and ticking
Baby blue exterior Grey MB tex
Recent work:
Replaced air cleaner mounting brackets and heat shields
Replaced alternator, fan and power steering belts
Replaced positive battery terminal
Replaced negative battery terminal and cord
New Duralast Battery

My car needs work.