1995 yzf 750 wiring diagram, starts wont rev

1995 yzf 750 wiring diagram , starts cold on choke wont rev turn off choke stalls, white triangular plug in wire harness between coils with blue yellow and black with blue tracer(three wire plug) has nothing pluged in to it somthing missing ? carbs cleaned pilot jets clear new correct plugs bike clean and well cared for, got it in this condition, main concern is somthing missing from white plug that did not come with this bike or is this a test port for somthing ? thanks