I have two wiring harnesses one going to my power supply (24V at 5A) and the other harness going to my main board, there is a motor controller on the board so it can draw a few amps. I noticed that the harness coming from the power supply has a left hand twist and the harness going to the main board has a right had twist so at the point when I solder the two wires together the twist will switch direction. The location of the splice is going to be near an arduino board with analog sensor lines going to it.
Is it a reasonable issue to be worried about the noise this creates? If so it is better to retwist the harness so they go the same direction or apply some shielding over the splice joint?