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E-Class (W211) 2003-2009

Ignition Switched hot lead in overhead for V1 install..?

     
Old Oct 27, 2008 | 01:12 PM
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sdunham
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05 E500 4matic, 08 ML320CDI
Ignition Switched hot lead in overhead for V1 install..?
Searched but couldn't find anything for this. Looking for a switched hot 12 volt lead in my E500 overhead console to power my V1... Currently I'm tapped into the D side fuse panel for power but it's not ignition switched so if I forget to shut off the V1, it sucks juice... Anyone have a DIY link...?

Thanks in advance...
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Old Oct 27, 2008 | 03:26 PM
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I'm afraid there is no switched power wire to the overhead control panel. But the OCP does feed the rear view mirror with two 15R lines. I doubt these could source the power for your V1 but if you build a small relay and use it to switch the constant power from connector C, pin 5 (red/black wire) and drive the relay from connector F, pin 4 or pin 8. Connector F pin 4 would be ground if you cannot find a better option (brown wire as always).
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Old Oct 27, 2008 | 03:53 PM
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Thanks for the reply. I'm sure I could find a switched 12 volt circuit somewhere under the dash but I don't want to start tearing things up if someone readily knows where I can tap into one... Thanks again...
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Old Oct 28, 2008 | 02:03 AM
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Originally Posted by sdunham
Thanks for the reply. I'm sure I could find a switched 12 volt circuit somewhere under the dash but I don't want to start tearing things up if someone readily knows where I can tap into one... Thanks again...
But I was talking about the wiring at the overhead control panel, not the dash. I guess you are not expecting you could get switched power from the OCP without opening it first?
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Old Oct 28, 2008 | 11:57 AM
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sdunham
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Sorry, DB, didn't want to give the impression that I blew off your suggestion about finding power in the OCP... I just hoped that before I popped the OCP and started rooting around with a VOM that someone already had a DIY for the wire I could tap into for switched 12 volts... I appreciate your reply...
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Old Oct 28, 2008 | 02:10 PM
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Originally Posted by sdunham
Sorry, DB, didn't want to give the impression that I blew off your suggestion about finding power in the OCP... I just hoped that before I popped the OCP and started rooting around with a VOM that someone already had a DIY for the wire I could tap into for switched 12 volts... I appreciate your reply...
This has been discussed many times. There is no easy way to get switched power anywhere but from the cigarette lighter circuit. There are instructions posted on how to get to it. I don't have the instructiosn easy but they are out there -- and I am not an expert mechanic and had no trouble doing this to wire a V1. While you're running cables and finding power, by the way, its a good time to install the V1 remote in the ashtray compartment. There's plenty of room if you remove the ashtray itself and put doen the rubber mat (avaiable from a dealer for about $5.00).
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