Thank you for replying. I'm looking for the ecm inputs and output for the jake. They should show up on a scanner. Pretty sure I want a bi directional scanner. The allison shows codes rt a the dash, I didn't have any. So, cruise, brake, on off pedal, throttle, and Lord knows what other sensors affect the jake. They add more every year. Turns a great piece of equipment into a bucket of manure. In the 70's if you didn't turn the switch off it would run you down to 0 and kill the motor. Just a few switches inline.
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2004 Dynasty 4
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