==for any one else that may need this info.==
I have found a diagram from another Chinese manufacturer "Changsheng GDZ143X133-9" that looks identical to my spindle "HQD GDL70-24Z/9.0".
Ive taken off the covers and using a multi meter traced the connections and they match the wiring diagram from the Changsheng spindle from what i can check.
the only difference i can tell is that the bi metal switch which should show a connection between pin 1 and 5, but there is no connection in its cold state, perhaps the GDL70-24Z/9.0 is normally open when cold, to me this would make more sense.
pin out diagram from the Changsheng GDZ143X133-9 first image below.
pin out diagram on the left from the Changsheng GDZ143X133-9 with a picture on the right from my spindle GDL70-24Z/9.0.
Attachment 437222
hopefully a better picture of the GDL70-24Z/9.0
Attachment 437228
hopefully a better picture of the GDZ143X133-9
Attachment 437226