question about kenwood amps W/ 8-pin din connection

I have a pair of kenwood Kag-901 amps (car audio) with a 8-pin input connection. does anyone have or could point me into the right direction to the wiring diagram for this connection, I am looking to run a mixing board (unpowered) into these amps to power PA speakers. I just need to know what the pin connections are. There is also a high/ Low switch and that is where i am losing the trace, i don't just want to start sticking wires in there in case of wrecking something. any help would be appreciated, Kenwood is offering no help as this is an old model that they don't use, stock, repair anymore.

You could try kenwood for a schematic. http://www.kenwoodusa.com/emailGlobal/ContSimple.aspx?men=3&M2=47

we've been trying to for about a yearand a half now. kenwood is playing dumb. just wondering if anybody has ever came across these.

do you have a picture of one of them?

it is a standard 8 pin round din connection, http://en.wikipedia.org/wiki/DIN_connector similar to the drawing in this link. each manufacturer, and each product uses these in a different way. I will try to get a picture of the connector and the amp up soon.

if there are other input types, RCA's, standard line-level, then that plug is probably a control cable from the head unit. Kenwood uses that type of cable for a control cable for all they outboard gear, XM TUners, CD changers, etc...