Thumb throttle help

[billyboya]

can anyone here suggest a good thumb throttle for a 48V 30Ah battery Ive seen a few but I only have 3 wires on old grip throttle, black, red, and green, But believe thumb throttles have 5 wires, like blue and yellow too, so where would the yellow and blue wires go. I think its because they have a key and a battery display.