wiring car stereo, lost factory harness

Hi In need of some help as I dont want to fry my headunit. It is non branded chinese OEM and does not come with factory harness. It has wiring diagram on top of unit and has a 14 pin connection on rear of headunit. I just need help deciphering diagram to actual pin layout so can install into car. I understand all the layout etc for my vehicle its just this unit that is baffling me. Many thanks in advance and your help is very much appreciated :)

LInks to images My car just in case it helps is a 2003 UK Spec Kia Sedona 2.9CRDi SE

Also the screen that came with it has 6 pin mini din for video I believe and 3 wires, blue, red and yellow. Tracing wires back to pcb shows them labelled as blue - GND, Red B+ and Yellow - MK Any ideas I do not have the manuals etc these are OEM items and completely unbranded