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
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.
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>
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