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The speedometer does not have a cable on a 1994. It is run by a sesnor on the rear of the trans/t-case.
The exact location of the speedometer cable is dependent upon the make and model of your 1994 pickup truck. In general, the speedometer cable goes from the speedometer to the speed sensor.
If the speedometer and abs light are not working then you have a speed sensor problem. If the speedometer or odometer are not working then you will need to take it to the dealership and have them send it off for repair.
A 1994 Plymouth Sundance/Duster does not use a speedometer cable. Instead, it uses a Speed Sensor located on the transmission.
http://www.ncttora.com/fsm/1993/index.html This is the FSM the Toyota Technicians use. It has all the information you need. There is no difference in the 93 and 94 truck.
Answer is too involved to answer here. Buy a repair manual for you car. Around $12 at most auto parts stores.
check the fuses.
ACKITS.com makes a pretty good kit. I just installed one on a 1994 Toyota truck.
Try: E-Bay Google.com
Located behind the front axle on the passenger side, best accessed from under the truck
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