I have a 1991 honda accord and I'm pretty sure that the speed sensor is bad - no speedometer and blinking "S" light I finally found the sensor and I' pretty sure that I can replace the part but I can not get the electrical connector to come off any clues?

 

should be clipped in.....

watch out for the clip where its on.. its pretty sharp

 

I've tried that but it will not cone loose does it have to come off the stalk before the connector will unplug

 

yes it does....
. you need to unclip the connector and then you can unplug it

 

I am having the same problem. Where is the speed sensor located?