are you using a new harness or a new ecu? i would start out by getting a service manual and start trouble shooting off of that. visit www.hondahookup.com/manuals/ for a service manual for your car. i checked my manual for my integra and it does seem that there is a fuse that is connected to the circuit for the speedometer, so i was incorrect. there should be a series of tests listed in the service manual that you can do to troubleshoot this problem cuz in my manual it listed a flow chart to diagnose this, which started with the vehicle speed sensor. to do these tests you need a digital multimeter to check for the specified voltages and for continuity. i wish i was more familiar with your particular car but starting with the manual should be your best bet.