Y'all know a lot more than I do about the real world issues involved here. I'm an electrical engineer and I want to build everything like the signal path for an oscilloscope front end, but I bet that's goofy. Pics of the wiring diagrams for an EDIS setup show using twisted shielded pair wiring between the sensor and the control box, and same for the line that goes to the ECU that actually determines the spark advance setting. The latter one makes sense to me. The former one, eh, they're going to be within 20 cm of each other. But mostly: the existing wiring stubs on the boxes don't have STP wiring. They just have standard electrical wires, single ones at that, sticking out. I understand more than I'd like about radiated noise, and if there was any evidence Ford had made any attempt to actually shield these, I even have the wire for it. I still will, somehow, for the SAW line. But it seems just goofy to have two 10cm long single wires sticking out of the sensor, that I solder into a shielded twisted pair for 10cm, and then back into the individual wires going into the control box with some kludged together joint to the ground wire. I'm actually tempted to cut the control side short and do this the way I do at work, but, again, if Ford didn't, should I?

I just found this here:
https://i297.photobucket.com/albums/mm ... ks_closeup_resize_100.jpg
So it looks like at least ddgonzal is also of the just twisted pair opinion.

I get what you are saying about insulation
I always prefer insulation than Ford's cost cutting
then again tensor rings use this approach with copper
and probably balances out noise via vortex principles.
Gets spooky but wiring is just like alchemy in complexity
I just always try and hide the stuff, it pains me even
if the bonnet hides it, its there in my mind LOL

STP is a metal shield covering the two insulated wires


That photo is of GM coil packs and the EDIS controller, but was not my installation

between the EDIS module and the VR sensor, I used a stock Ford Aerostart VR sensor wire and connectors. I don't recall if it was STP or not




I specifically used STP on the cable between EDIS module and the ECU (MegaJolt Lite Jr). my notes says I used 10 feet of wire, because it had to go from front of engine into the cabin and I wanted to experiment with moving it around. I didn't cut the wire shorter, but never noticed any problems