Date: Wed, 21 Aug 2013 16:44:02 -0700
Reply-To: Zeitgeist <gruengeist@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Zeitgeist <gruengeist@GMAIL.COM>
Subject: Re: Horns, improvements
In-Reply-To: <52154A78.7040505@cox.net>
Content-Type: text/plain; charset=ISO-8859-1
The four pole relays are available at Flaps, but lots of them are cheap
Asian crap that I wouldn't trust. The most common relays I grab at the
local PnP are versions of those two five pole units, so as long as folks
know which fifth pole to use or ignore, they open up lots of possibilities
for using good quality OEM relays.
On Wed, Aug 21, 2013 at 4:17 PM, mark drillock <mdrillock@cox.net> wrote:
> Too bad that link doesn't show just a plain 4 pin relay of the most
> common type and what I used. It shows two common versions of the 5 pin
> type, either of which would do the job if the 5th pin was ignored.
> Unfortunately, incompatible special versions of 5 pin relays also exist,
> such as in some Vanagons, so close inspection of the diagram printed on
> the relay would be required to prevent wiring it up wrong. Simpler just
> to get a generic 4 pin relay and not have to figure out which pin is the
> 5th pin odd man out.
>
> Mark
>
> Zeitgeist wrote:
>
>> http://www.the12volt.com/**relays/relays.asp<http://www.the12volt.com/relays/relays.asp>
>>
>>
>>
>> On Wed, Aug 21, 2013 at 3:48 PM, mark drillock <mdrillock@cox.net> wrote:
>>
>> Almost, the trigger is a ground from the horn button.
>>>
>>> The power line to the horn gets split off to also feed 86 of the relay
>>> trigger, constantly. Then 85 is wired to the horn button wire and the
>>> horn button grounds 85 when pressed. So the button ground is the real
>>> trigger.
>>>
>>> Mark
>>>
>>>
>>>
>>> Jim Felder wrote:
>>>
>>> So, big 12v wire straight to the horn, big ground wire interrupted
>>>> through the relay at 85 and 86, with the trigger and ground as usual?
>>>>
>>>> Jim
>>>>
>>>>
>>>> On Wed, Aug 21, 2013 at 5:17 PM, mark drillock <mdrillock@cox.net
>>>> <mailto:mdrillock@cox.net>> wrote:
>>>>
>>>> Yes, the relays with a mounting tab can be handy, like the one in
>>>> my
>>>> photo has. Your description of your use of pins 85 and 86 is not
>>>> what I did at all for the horn usage though. I guess I will post
>>>> more details about the relay wiring at a later time. Because it is
>>>> a
>>>> horn circuit we are actually using the relay for controlling a
>>>> ground wire after the horn rather than the more common usage for
>>>> controlling a power wire before the power consumer. Electrically it
>>>> amounts to the same thing but people visualize it differently.
>>>>
>>>> Mark
>>>>
>>>>
>>>>
>>>>
>>
>> --
>> Casey
>>
>>
--
Casey
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