I have a 1993 300SD (w140). The last time
that I pulled my battery to add water and
put it back, I zapped a number of light
bulbs in the center console and the dash.

I thought that I read somewhere that there
is a switch that needs to be pulled before
replacing the battery but I haven't found
anything. Any ideas?

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Ralph Burnette
1993 300SD

I don't know about a switch, but one word of caution that applies to any car....when removing the battery, always disconnect the negative terminal first and get it out of the way, then proceed to the positive. The reason is that your conductive wrench will do no harm if it cantacts the chasis while removing the negative terminal. After it is disconnected, there is no electrical path should you make a ground while disconnecting the positive terminal.

This may sound elementary, but a lot of DIY's learn the hard way. Hope this helps!

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Deezel
87 300TDT
150,000 miles

Deezel, this is a gooooood tip!

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