About 6 months ago my honda speedometer was jumping around 5 miles, about 3 months ago when I drive it will drop to zero then I would punch the dash and it would go back up to reg. speed. It's gotten worse and worse I would have to punch it maybe 10 times to get to work. Now it seems like it will work when I leave the house then will go back to ZERO then I will keep punching it and nothing happens. I would have to park the car then turn it back on and hoped it worked. I looked for the cable under the dash but I could only find the cruise control one and RPM one. Can anyone help me out? thank you