Jdm H22a REV meter not working

[Turbolude]

Hello

I am new to Hondata and have just plugged my P28 Hondata in to my Turbocharged H22a Prelude, Which had a P13 as stock. The Problem is that my Prelude is OBD1 jdm and it has Traction Control. The P13 had 4 plugs 1 which was for the Traction which don't fit in the p28 after plugging in my p28 my rev meter on the speedo has stopped working but in the Smanager 300 it shows the revs I am confussed to what to do.

Thanks

[Spunkster]

You'll have to look at a wiring digram for that vehicle and see where the tach signal is going and determine what you need to do to correct it.