Can't Find 12v Fan Pinout

[GhostRoadieBL]

so I'm swapping out the fan in my projector with a Noctua NF-A8 which has the standard YRK wiring. 

the currently installed 80mm aub0812h-e fan has non standard cable colouring nor pin naming conventions 

Has anyone had experience with these wiring labels or should I worry about burning out the noctua by swapping the connectors with the wrong polarity?

 

 

I believe C should be common which should be -12v, the arrow should be +12v but that might be mixing terms

 Hard to read but Top is Brown/Red wire - JWT and < arrow // Second is black wire - C17 and 2 // third is grey wire - (c) and 3

 

connector also doesn't really help much

 

 

[GhostRoadieBL]

Solved my own problem, nothing can't be done with a multimeter

 

Grey - (C) -> Yellow (RPM)

Brown - JWT -> Red (+12v)

Black - C17 -> Black (Ground)