Why are the fuelpump wires twisted pair and shieled ?

[robert presti]

I'm adding a second FPMD and new wires to the second fuel pump. When I looked at the new plug I can see the wires were twisted pair and shielded. Is this necessary? Did they do it for the radio or for the fuel pumps? Without cutting my harness apart I have no idea how far they run twisted and shielded. I'm guessing it has something to do with pulse width modulation. I might keep it that way vs. return fuel. I also have an amp and system in the trunk.

 

[Blkkbgt]

Wires are usually twisted to prevent crosstalk. If ford put a shielded twisted pair of wires in that area it's more then likely for a reason. I would do my best to maintain a similar setup. Just my .02.

 

[robert presti]

Wires are usually twisted to prevent crosstalk. If ford put a shielded twisted pair of wires in that area it's more then likely for a reason. I would do my best to maintain a similar setup. Just my .02.

That's my thought as well but it doesn't seem anyone talks about that when adding a second driver or increasing the wire gauge. I don't know if they do it without, with success or if they just don't mention it. It would be interesting to see the aftermarket harness to convert to dual drivers, and if it has twisted and shielded wires to power the pumps.


As you said there must be a reason they did this, as it adds some expense to millions of cars and trucks. I was hoping for the reason why. Or that others run regular wiring without an issue.