While making a band selection control cable for my HL-1.5Kfx and a TS-590SG I first followed the cable pinout shown on page 41 of the HL-1.5Kfx Users Manual that's available elsewhere on-line.
The pinout looks odd, but rest of manual is accurate, so I followed the documented pinout.
Needles to say, it didn't work.

The pinout in that Users Manual is not correct.

I made an edited version of the page, that shows a correct pinout for a Kenwood RS232 control cable for the HL-1.5Kfx.
I'll add the corrected page to the files section.

Mikko, AB6RF