newbe here speedometer not working

Hey all

Sorry if this is in the wrong place its my first post.
I have a 2003.5 Mazdaspeed Protege with an intermittent speedo. I have replaced both front wheel speed sensors with no luck. It works some of the time then nothing. I have the speeding ticket to prove it :( I may have known I was a little over the limit... Anyway wondering where to go next?
 
check to make sure the electrical wiring that plugs into the back of the speedometer is plugged in the whole way, if it is id say id look on ebay for a new speedometer
 
You might also check the axles to be sure you didn't lose an abs ring off of one or something.
 
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