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[Healeys] LED Running/Stop Bulbs

Subject: [Healeys] LED Running/Stop Bulbs
From: bspidell at comcast.net (Bob Spidell)
Date: Wed, 20 Sep 2017 16:28:09 -0700
References: <5f3c2fbe-67be-fa15-fad7-f054948778ea@comcast.net> <MWHPR19MB11188DF5C9F72F4D27A71C0DA5610@MWHPR19MB1118.namprd19.prod.outlook.com> <6a1bca5c-2978-18f6-cf91-8ebb5b7a12f2@comcast.net> <MWHPR19MB1118EDA315BDCDD8A94699E6A5610@MWHPR19MB1118.namprd19.prod.outlook.com>
Likely--they are diodes after all.


On 9/20/2017 4:26 PM, WILLIAM B LAWRENCE wrote:
>
> Maybe the voltage differences weren't enough to damage it. And you 
> probably wouldn't notice if it just didn't work at times. It would 
> work as long as the current was flowing in the right direction and 
> with enough voltage to turn it on.
>
> ------------------------------------------------------------------------
> *From:* Bob Spidell <bspidell at comcast.net>
> *Sent:* Wednesday, September 20, 2017 11:21:55 PM
> *To:* WILLIAM B LAWRENCE; Healeys
> *Subject:* Re: [Healeys] LED Running/Stop Bulbs
>
> Thanks, Bill.? Makes sense, but I ran with the LED for many hours and 
> it didn't die.? Maybe I'm more balanced than I thought ;)
>
>
> On 9/20/2017 4:17 PM, WILLIAM B LAWRENCE wrote:
>>
>> The charge indicator light works by balancing two hot side (negative 
>> in your case) inputs. If one side goes out of balance the current 
>> flows from the hot side to the low side and lights the lamp. That 
>> means that the polarity changes as conditions change. LEDs are diodes 
>> which are polarity sensitive and will not function and 
>> will?possibly?be destroyed by reversed polarity.
>>
>>
>> Bill Lawrence
>>
>> BN1 #554
>>
>> ------------------------------------------------------------------------
>> *From:* Healeys <healeys-bounces at autox.team.net> on behalf of Bob 
>> Spidell <bspidell at comcast.net>
>> *Sent:* Wednesday, September 20, 2017 4:58:55 PM
>> *To:* Healeys
>> *Subject:* [Healeys] LED Running/Stop Bulbs
>> I've got LED backlights in my instruments--except for the charge/cutoff
>> indicator*--and would like to put them in my running/nav/brake lights.
>> The correct incandescent bulb is an 1157, and I've found lots of LED
>> 1157s on the 'net, but they're all neg. ground and my cars are both pos.
>> ground (and I'm not interested in changing to neg. ground).? Anyone
>> found pos. ground 1157 red bulbs anywhere??? I'm aware you need to
>> increase the load with resistors, or change to a solid state flasher.
>>
>> TIA,
>>
>> Bob
>>
>> * anyone know why you shouldn't use an LED here?? I ran one for a while
>> and noticed no issues, but Moss and others are adamant you shouldn't 
>> do it
>>
>

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