Hi,all can some one help on speedo for standalone bf barra plus cluster

Hi can some Please tell me if I can get speedometer on the cluster retro fitted with the barra&4 so,auto auto has vss sender in rear housing(bf ute) ecu is bf with pats removed,getting pulse as B07,OK. but using a ba cluster would I need a bf cluster?????
This unit is fitted in my old coaster bus(camper),I have gotten most things working in cluster,p
Rpm,warning lights ,etc,but cannot get speedo..
I am an old 80 y,old mechanic,but the digital world leaves me a bit bewildered..
I thankyou in advance for help ,FRUSTRATED BARRY IN SA..