That might limit your options. I'd figure out the connections on those two things first then look at harnesses. If you have an aftermarket column it likely has GM connectors which would actually work seamlessly with the AAW harness. The digital dash is probably LED lit so that may require a lighting inverter that you will have to figure out how to connect to to whatever harness you buy. Anything digital is not going to just plug and play with an OE derived harness whether it's based on a GM design or not.