CX2510 radio harness wiring

Hi, just bought a cx2510 and i'm now looking to put a radio in. OEM radio are around 300 bucks which i think is overpriced ( you can get a radio for 30 bucks every where ).

Only thing is, normal car radio comes with a 16 pin wiring harness and the 1 on cx2510 is a 12 pin harness..

I was wondering if some one out here have the 12pin harness diagram so i could make the arrangement with a 12 pin harness and some connectors..

​

Thanks!