@Christopher-Bunnell the dash is probably pretty similar to the onion hologram since they were pretty much developed at the same time. if you can find the pinout sheet for the dash and also the pinout and maybe tech reference for the onion you might be able to cross reference the pins that onion uses with the onion cellular and just match those same pins from the dash and using wires plug those dash pins into a onion expansion, anyone of the expansions should do.