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Okay, first thing, don’t continue to plug in the 6 wire telephone cable – it should not get hot.
As far as I know, these cables are “signal cables” for carrying small, very low power signals between mount and guider. Heat indicates that you have too much power going through, such as the power to drive the mount, which is typically 1 or 2 amps at 12V DC.
This suggests that maybe, the wiring or cable is incorrect, as that kind of power should not appear in a signal cable.
I say maybe, because I had a hot auto guide cable once due to a circulating earth problem; a heat sink had slipped inside the mains adapter and was now touching the metal outer case so power that was going to the mount was somehow circulating in the auto guider cable. Fortunately, no damage was done.
Cheers
Dennis
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