1985 442 Gauge Cluster Wiring/Circuit Board: Available?

[Hurst/Olds 73-74]

Some of the gauges in my 1985 442 are not working. I believe it's the wiring/wiring board/circuit board behind the gauges. What is this wiring piece commonly called? Is it available anywhere as OEM or aftermarket? if not, does anyone have a factory part number for it for a GM search? I'm going to use a previously posted picture to illustrate:

 

[gdouaire]

If you visually inspect the copper traces on your board, do they look broken?

I would suspect the connectors on the back of your dash - sometimes, the tabs on the connectors are squeezed and do not make proper contact with the board. That happened to me. That and also interference with the speedo cruise control wire... Pulling the connector out so they protude a bit more worked for me.