Set my multimeter to volts AC and was getting around 31 volts with black lead on thick black wire of Bonus Relay and red lead on thick yellow wire of another relay. Tested this on a few yellow wires and was still getting around 31 volts AC.
Started up a game, pressed a few drop targets down and then put black lead on thick black wire of Bonus Relay and red lead on green wire of outhole/trough switch. Only got 5 volts AC.