b16a2 swap, half of del sol cluster not working

i recently inherited a del sol with a b16a2 swap. great motor and the car runs great. unfortunately the cluster doesnt work completely. the speedo and tach do not work, only speedo lights up when lights turned on. CEL light does not come on, and cruise control does not work. i took the cluster and placed it in another del sol and everything works when swapped. im afraid to get into an electical tracing nightmare. where do i start? if i can get the tach and speedo working, the rest is trivial... someone please help or point me in the right direction. TIA

diko

vss? fuse? short or open in wire?

my recomendation is....................get a helms with the electrical diagrams and start looking at it. if your scared, then take it to a shop and let them do it or else, just drive around with a cluster that doesnt work.