I use a 1991 model of XL honda accord, some weeks back, my speedometer stopped working and the S lights blinks consistently, what could be the problem and how do I fix it.

Try to go to your local Honda dealer.This is very common in honda accords to happen,ask them how much will this cost,because it's really unknown problem,but occures in many accords

I use a 1991 model of XL honda accord, some weeks back, my speedometer stopped working and the S lights blinks consistently, what could be the problem and how do I fix it.
Vehicle speed sensor. 120 bucks