Yeah, I've got an older DK with the 4-board set and the only difference is that the 4-Board version had and extra cable. It's a 7P cable that runs from the power supply to the sound board. Everything else hooks up the same (just in different spots.) Get a TKG-3UP manual off the internet and a TKG-4 manual and check the wiring and connection charts to see exactly where everything goes.
If you have an edge connector it won't work, you'd need a whole harness.