My friend has a 98 Civic with a '98 GSR motor in it. The car is fine, but one problem. The speedometer and odometer do not work, however all other gauges function. We changed the speed sensor, checked the gauge cluster on another car(which worked fine), and now have no clue to what the problem could be. One issue to point out tho, is that the wire harness for the engine is NOT a gsr wire harness, however is a civic ex wireharness with some modifications done to it. So, we are thinking its the wire harness thats the problem. If so, would we need a wire harness from a gsr, or would a type r one work, or can any integra one be compatable? Any help would be great, thanks.