Re; Split Second
When I played quizbowl, there was a buzzer system that one or two teams on the circuit would have that was nicknamed "The Knot," as the buzzers would get hopelessly tangled every time you put the system in its box.
It was a system made up of 12 buzzers all plugged into a central port. There was no light system, but rather a rank system on the central port that tells the moderator who buzzed in it what order. The buzzers were separated into three groups of four, so the moderator would have to announce, say, "B2" or "C4." The alphanumeric codes could be found just below the player's button.
A "budget" version of such a system could have worked for a Split Second board game. Have three buzzers plugged into the central port, and players can buzz in after the question is read, with the moderator prompting based on who buzzed in first.
JD