shielded cables
Seems to be a noisy cable, probably unshielded ?
It works like an antenna, if it's not shielded.
It has to be grounded at one side (end) of the cable.
May be also that a nearby cable transmits by
capacitive coupling noise to your "hot" cable.
Do not lay cables side by side !!!
This looks nice, but supports the effect of capacitive coupling.
Is the servo proper balanced? too high amplification looks also like noisy inputs !
Rico
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