About Tingleflies and Sabosloggers' design flaw
I came up with a three ideas of electrokinetic insects (i will call all of them Tingleflies due to the tingling sensation electrical impulses they emit would induce in humans, but of course feel free to change this name, i just don't want to say insect all the time) and one broad explanation, why they are able to control Sabosloggers (Although there is a more detailed explanation of this process for every insect).
Sabosloggers' design flaw
This one will be short. Either retractable cable is conductive to electricity and not isolated enough from nearby energy-carrying crystal veins, enabling tampering with electrical impulses inside Saboslogger or there are tiny gaps in this mechanism giving direct access to crystal veins with the same result.
1. Backward Compatibility with Tingleflies
If Sabosloggers are based off of biological principles I see no problem with their "software" also being inspired by nature, for example: Species of eusocial insects akin to bees that communicate by exchanging electrical impulses through specialized organs on their abdomen, instead of physical movement (dancing). It is possible that ancient mages studied Tingleflies, understood their "language" and found it useful as a simple and precise way of instructing golems on what they have to do. Fast forward from Old Age to Now and there are quite a few potential outcomes, although I find evolution of a new caste of Tingleflies most feasible. Representatives of Guardian Caste or maybe Pilot Caste (if the word "pilot" is known to the people of Dracoriri) are exceptionally big Tingleflies without wings, encased in thick and durable exoskeleton with long and feathered tails that wrap around Saboslogger's cable and are used to pilot it. The "How ?" is already answered, both Sabosloggers and Tingleflies use the same language. Tinglefly Pilots don't have wings due to sedentary life, are very big due to huge stores of fat needed to produce electrical impulses strong enough to control the Saboslogger. Pilots may even be neotenous, what would explain their larvae-like appearance. They protect Tingleflies' hive from danger, maybe even carry those hives on Saboslogger's back.
If people want to use Saboslogger in this scenario they just have to decipher Tingleflies' language, not the easiest task, but dobale in my opinion.
2. Tingleflies' nesting site
This version of Tingleflies is inspired by wasps from Braconidae family (read about them on wikipedia, I'm not going to copy paste it here) with one change, they don't have stings but organs that produce electric charge used to stun and/or kill prey, those organs in less developed form are also present in their larvae. Some Tingleflies started putting caterpillars infested with their eggs inside Sabosloggers' claws or even Sabosloggers themselves due to their indestructibility. With huge amount of food, natural selection, a lot of time and a bit of magic, larvae could evolve basic instinct of piloting Saboslogger as a team using their electrical impulses from inside the poor caterpillar. Because this trait is advantageous and uses existing organs it could proliferate throughout Tinglefly species and relatively soon all larvae would be able to do this. This method of nesting would give Tingleflies advantage but also limit their population due to limited number of Sabosloggers, although it is a sustainable strategy because Sabosloggers can be used for nesting seasons ad infinitum, and when one set of larvae matures the Saboslogger is ready to be used by next one.
If people want to use Sabosloggers in this scenario, well... I'm unable to come with a way they could learn to directly do that, although they could use chemicals to control behaviour of Tinglefly's larvae, most probably make them docile or aggressive and not much more.
3. Cliche parasitic Tinglefly(Tingleworm)
Caterpillar-like organism able to control electrical impulses inside bodies of small animals by attaching itself to their spinal cord with small spikes or fibres, but staying mostly outside their body (A bit like Symbiotes from C. M. Kosemen's "All Tomorows"). The parasite would control body of it's host but not the brain, which would make them terrifying for any sentient species that could host them. Host body would be used basically as a mecha for a parasite to gather food and protect itself, forced to eat and drink by it's new user. Movement of the body would most probably be very inept when controlled by parasite, but it does not care about it's host, so if host would fell ill or die parasite would just try to jump the ship before it happened. As before, fast forward, sprinkle some magic and we have a species that can use electrical impulses to control Sabosloggers as de facto extension of their bodies, the same way their ancestors used small animals, but now host is an indestructible machine. This scenario could be pretty bizarre, as parasite uses it's own senses to control host, mating displays of Sabosloggers are not impossible (yes, I'm thinking about parasite using Saboslogger to perform a mating dance as a proof of it's piloting prowess), because with this powerful host parasite has resources and safety to evolve more intelligence and more sophisticated behaviour. But as in scenario two, their population is limited by the number of Sabosloggers.
I sorted scenarios from my most favourite to the least, but i like all of them. I didn't specified it, but the basic mechanism of emitting electric impulses is the same in all three scenarios, emission through some kind of fibres surrounding retractable cable or crystal veins, also impulses are created by biological means, which are only supported by magic. Feel free to ask questions. Hope i helped.