Im building this car and got it running, V-tech engine installed but now the dash board meters or fault lights don't work. RPM and MPH inop also, the only light that comes on is the battery light. The engine check light doesn't work either. Does someone have the shop manual wiring diagram for this vehicle. Please help

 

Sounds like the ground wire for the ECM is not hooked up or tightened. Usually, the ground wire is near or connected to one of the bolts on the thermostat housing.