Namco RGB encoder questions?

[sharp]

I decided to build a supergun. To make this thing have the broadest horizon, I figured I should get an RGB encoder to use on any TV. I bought a Namco RGB encoder from the projection cabinets. When I received my pre-soldered jamma harness, I had the realization that I just undermined my own ability by buying this pre-soldered. Not only that, but by undermining my ability and trying to take the easy way, it became harder. The harness arrived lacking a -5v wire on top/bottom. It also does not have the right molex housing to fit my RGB encoder. After that, it made me think about what pin is what on the Namco RGB board. I had trouble finding anything out about it.
I am even confused about which side is Top and Bottom... Because the pinout, the only major difference on 1 side or the other are the video signals, 1 side has a ground with the 2 video signals, I think pin 12&13?
On his, I dont know if he put the ground on the top or bottom. 
Everyway I look at this thing, it looks the same on both sides. Is there a definite way to know which is top and bottom?

Any advice would be awesome, and thanks in advance! 

[NFG]

That's it?  No photos, links, schematics? 

Generally when I'm trying to work out which side is which I look for the ground and power lines first, and then start working out which wires have to be present to function and eliminating the possibilities one by one. 

[sharp]

Sorry





What confuses me about this jamma harness is that what I thought was the top is lacking the ground after the 2 video signals. I suppose the ground could be on either side though. Im sorry for the foolish questions. 

[NFG]

Well top and bottom of the JAMMA connector are obvious, they're even marked, it seems.  Not all ground pins are required, so don't worry about missing ones. 

EDIT: sorry, was replying on my phone.  Didn't realize the connector labels were in Chinese.  =)

[sharp]

the chip is a sony cxa1645m

I tried to figure out the headers pinout using a multimeter and couldnt figure it out.