Hi Ray: It shouldn’t make any difference as you will be
drawing the same amount of current thru the switch whether you are key the
positive side or the negative side. The real way to prevent any arcing in the
switches would be to have a relay carry the load current. I wouldn’t want to
have the 12 volt positive sitting at my headlights waiting for the ground to
turn them on. This is just looking for an accident to happen. I’m not a
mechanic but have worked on electronics all of my life.
Cheers from Fern
Sent: Sunday, March 06, 2016 1:03 PM
To: paul
Cc: Listsaver 300 Club ; Ray Jones
Subject: Re: [Chrysler300] Surprising source of miss in 300
?
Paul and
all;
This has nothing
to do with the problem, but just some electric lore to digest.
You mention
arcing in the switches. In Japanese cars (worked on them most of my later
career) the switches are switched negatively.
We switch
positively. So, what happens is "Potential" arcing. Electricity wants to do
work, which is why a short is so bad, NO work.
Even a little
mini light bulb, drawing almost no current is work, so all is fine.
So, when we turn
a switch, just before the actual contact the current jumps across the space to
go to work. This is an arc.
Switched
negativity, the work is already in the line so you are merely providing a ground
to complete the circuit, no arc, work performed.
In Japanese
cars, testing circuits will drive American techs nuts, until they learn this
basic fact. Even the head light bulbs will have the current going thru them,
awaiting the switch to provide ground so they can light up (work),
If you got this
far, go to U-tube and Jay Leno's Garage and look up the Acura NSX video. Awesome
car with unbelievable engineering, including separate electric motors for each
front wheel and a Armature and field behind the flywheel to provide much more
power.
Enjoy,
Ray
On Sun, Mar 6, 2016 at 1:04 PM, paul paulholm@xxxxxxxxxxxxx [Chrysler300]
<Chrysler300-noreply@xxxxxxxxxxxxxxx> wrote:
-- Ray
Jones. Y'all come on down an see us. Ya hear? __._,_.___ Posted by: "Fern Rivard" <crc@xxxxxxxxxxxx> To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to https://groups.yahoo.com/neo/groups/all/manage/edit For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang __,_._,___ |