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Fw: Electricals Question

To: <healeys@autox.team.net>
Subject: Fw: Electricals Question
From: "dean" <dht3000@adelphia.net>
Date: Sun, 23 Apr 2006 19:03:33 -0400
I did that to my BJ8. The cigar lighter mounting was made of plastic and it
 had 2 connector wires coming out the back so you can wire it up to which
 ever you have . Negative or positive ground.
 Dean
>>>
>>>I am thinking of fitting a cigar lighter to my BJ8 so I can charge my 
>>>mobile
>>>phone, and run a TomTom SatNav off it as well.
>>>
>>>My BJ8 has the original wiring set up.
>>>
>>>My question is:
>>>
>>>for devices that run off a cigar lighter like phone chargers and power
>>>converters for things like SatNav, does it matter whether the car is 
>>>positive or
>>>negative earth?
>>>
>>>Thanks in advance for all the help I know i will get.
>>>
>>>Tim
>>>BJ8 1967
>>>Frogeye 1959
>>>
>>>Tim Ward
>>>Warwick House
>>>12 Mill  Road
>>>Kislingbury
>>>Northants. NN7 4BB
>>>Tel: 07855 388 751
>>>
>>>_www.SixSigmaWorks.co.uk_ (http://www.sixsigmaworks.co.uk/)
>>>www.TimWardAssociates.com
>>>
>>
>> Polarity does matter, unless the connected device has reversing diodes 
>> fitted - which I think is unlikely. If you fitted a cigar lighter with 
>> reversed wiring, on an insulated panel, you'd have to be aware that the 
>> (visible, touchable) outer sleeve was at battery potential above chassis 
>> earth.
>>
>> Personally, I would fit my own two-pin, fused, connector under the dash 
>> somewhere. Cigar lighters are a bit of a mechanical abomination anyway.
>>
>> I think I have heard that there is a newer accessory connector being 
>> introduced for vehicles, to allow for phones, laptops, satnavs etc., but 
>> don't know any more than that. Can anyone else shed more light?




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