s13 speedometer not working

[sr vegas 240]

ok its a 1990 hatch that had a sohc previous owner swapped s14 sr20 European model. When i got the car the wiring was a mess noting worked so i rewired the whole engine harness now i got most of the stuff working. Tach dont work because its a sohc cluster the speedo is all wired right has power ive rechecked everything. Will this get fixed with a dohc cluster or do i need to run s13 speedo?

[kruked]

I understand the concern that you have, but this has been talked about countless of times. Google will tell you what you need to know, and you'll get a much quicker response.