concentric twisting and power wires

Hi all

I'm about to start the construction of a new engine wiring harness for my Mitsubishi Evo 8 and i'm using MaxxEcu Race.

The main or initial core of the harness is obviously where we put the thicker wires, I have;

Wideband Lambda

Cam & Crank

Knock

Main Engine ground

12v Live

Experience tells me that you generally wouldn't put the 12v power wires next to sensitive signal wires such as crank sensor, knock wires etc.

My question is, is it ok to run the power wires alongside the above list of signal wires? The power wire in question will be powering the injectors, ignition coils, Cam & Crank Hall sensors, Boost control solenoid etc. OR do i run them entirely seperate?

I watched the HPA videos on Concentric twisting and there's no mention of this

I appreciate any advice or indeed criticism.

Thanks

Seb

I always run crank/cam/knock signals in an individual shielded cable for each one. These shielded cables can then be combined with any other power or signals without any issues of the signals being affected.

BUT -- if your experience tells you that doesn't work, then go with what you KNOW and don't do it.

I have never needed to shield twisted pair CAN wiring. While I have worked with concentric twisted wiring (repairing damage), I do not feels it is worth creating that and so I don't do it. My harnesses are plenty flexible, just not perfectly round :)

Just doubling up what David says - a huge reason why many use 2 shielded multiconductor cables as a concentric core is they don't particularly care what you've put next to them (within reason) and every car needs a trigger system of some sort.