88 626 speedometer problems
 

I have an 88 626 and the speedometer quit working? I changed the starter yesterday and drove it up town, the speedometer was working fine, then the car wouldn't start but it was just a loose battery cable. speedometer then just quit working? was told it could be either the speedometer cable or speed sensor. wondering if there is anything else (electrical) it could be? It has electronic readout for speedometer but a cable to the transmission. and could any one tell me where the speed sensor is located