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Old 04-16-1999, 09:58 PM
jmann
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I'm changing out my original radio in my 1985 500SEL, and I know I want to disconnect the battery first- what, if anything, is this going to affect? Are there any maintained computer settings that will be erased?

I guess I'm asking, is this okay to do?

Thanks,

James
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Old 04-17-1999, 12:25 AM
RAE190
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No you won't hurt anything to disconnect the battery. However do you have a wiring diagram for the factory wires to install the new radio? If not you are going to want to leave the battery connected so you can test for a constant, ignition, ground and illumination with a voltmeter. You can use a AA or 9V battery to test speaker pairs too, you will hear a pop from the speaker when you put the battery on the right speaker leads. Just be carefull about the exposed wires if you leave the battery connected. If I am just doing a radio install I don't disconnect the battery. Let me know if you need a wiring diagram, I might have one for your car. Good luck.
PS: I am a MECP certified installer.

------------------
Adrian Eckenrod
MBCA, PCA, BMWCCA & SCCA* member
86 190 2.3-16
83 944 ITS Racer
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