i have a 96 civic ex with the wiring for the y8 but have a y7 in the car. it keeps popping the alternator/speed sensor fuse, when this happens the speedometer goes crazy and my headlights and dash light pulsate. im still running the ecu from the y8 and have a ecu for a y7.just curious how to get the speedometer to work ive changed out the speed sensor twice and still has the same result,the alternator checked out and its fine.When i replace the fuse everything works fine for about five minutes or 3 miles or so.looked it up on all data and found that the fuse that keeps popping is also shared for the 2 O2 sensors could it be that one of those is bad. Any help is appreciated.

 

Not sure but an O2 sensor runs about $30 bucks you might buy one and replace one at a time to see if one is bad.