then you are correct. the abs is driven by the speed sensor in the rear end. does the abs light come on with the key on? if so, and it goes out, then the speedo is dead. there's a splice that divides the signal from the sensor to the abs and speedo. do all the other gauges work? the power for the whole cluster is the blue/red wire that is 1 of the wires that plug into the speedo. i'd like to see an ac signal at the speedo connector first, but with the abs working right, the speedo is most likely the culprit. no ac signal, then you gotta trace it back. good luck, chuck.