[OAC_Sparky]

konafocuswrc,Mar 12 2008, 10:56 PM Wrote:hold yellow wire, and touch the chassis..what do you get??answer is spark..of course fuse will blow first..but what i said was "in worst case", those spark can fire up something behind there..
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Thanks for the remedial electrical lesson.

Try this:

OAC_Sparky.

OAC as in Oakville Assembly Complex (Plant).

Sparky as in "a common term referring to an electrician".

Put those together, I'm a licensed electrician (and a machinist), certificates in robotics and PLC and motor control, on top of having worked assembling Ford vehicles and/or installing and repairing the equipment that builds them for 19 and 1/2 years. Meaning I have been building cars for Ford since you were seven, and working on my own cars since before you were born.

And I have the schematics to the Focus.

So forgive me if I sound like a dick, but I know what I'm talking about.

The first thing that the main wires from the battery go to is a fuse, and then to the central fuse panel that protects everything in the cabin. So unless (a ) the person has bypassed all of this by running direct to the battery or (b ) replaced the fuse with one way oversize or a wire jumper or (c ) doused the interior with gasoline, the chances of a short to ground starting a fire in the passenger cabin is very, very small. That's what the fuses are there for.

Your own quote:

Quote:omg, why is the aftermarket harness is connected to factory harness but not protected??

...if it indeed the factory harness, it IS protected.

However, if focusracer actually has first-hand knowledge with the OP's car,

Quote:His is run straight from the battery, he has to remove the faceplate to turn off his stereo. I've questioned Jon on this before...

then he isn't using the factory harness, right? That, then is an issue.

Just thought I'd clarify things. No offense.