A diode in series with one of the leads can protect the device against
reverse polarity. I plan to put one in my "adapter".
Bob Donahue (Still Stuck in the '50s)
Email - bobmgtd@comcast.net
Cars: 52 MGTD - #17639
71 MGB - #GHN5UB254361
Member: NEMGTR #11470
NAMGBR # 7-3336
Hoosier MGB Club
Olde Octagons of Indiana
----- Original Message -----
From: "Bob Howard" <mgbob@juno.com>
To: <bobmgtd@comcast.net>
Cc: <mg-tabc@yahoogroups.com>; <mg-t@autox.team.net>
Sent: Wednesday, June 18, 2008 10:13 AM
Subject: Re: [Mg-t] Plug for "Inspection Lamp Socket"
> Bob
> Yes, or more accurately, there once was at Moss and there may still be.
> Things plugged into the cig lighter may be polarity-sensitive, and
> though the lamp socket is color-coded, passengers may not be as careful
> as the owner when plugging in. Even in a TD with its splendid cockpit
> ventilation, the smell of incorrect polarity through a device is
> unmistakable.
> Some T-owners have installed a cig lighter down in the shadows at
> bottom forward end of the underdash panel. Hardwired into the car, the
> lighter can be neg earth with car pos earth. This works for accessories
> that don't have an antenna earthed to the car, so CB and radio antennae
> must be isolated from the car or magnetic base types used.
> Bob
>
>
> On Wed, 18 Jun 2008 09:37:35 -0400 "Bob Donahue" <bobmgtd@comcast.net>
> writes:
>> Is there a plug available to fit the "Inspection Lamp Socket" that's
>> on the TD
>> dashboard? This would be a handy way of connecting 12V electrical
>> accessories.
>> I'm thinking of making up an adaptor with a "cigarette lighter
>> socket" on the
>> other end.
>>
>> Bob Donahue (Still Stuck in the '50s)
>> Email - bobmgtd@comcast.net
>> Cars: 52 MGTD - #17639
>> 71 MGB - #GHN5UB254361
>> Member: NEMGTR #11470
>> NAMGBR # 7-3336
>> Hoosier MGB Club
>> Olde Octagons of Indiana
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