My car is suppose to be a 90 CRX Si. How do I tell the differance? My gauges worked, but I didnt want KPH that were in there. I swapped in a set of guages from another CRX and NO gauges work except engine temp, and the high beams turn the seat belt indicator on the guages off and on. Is there a differance between Si and other models gauges? And is the wiring differant?