Re: 1951 Ford overdrive
First I want to clarify the purpose of that handle labeled "overdrive". It does NOT "turn on" the overdrive when pushed in! It just allows the overdrive to operate as designed when pushed in (its normal position). All overdrive functions are electrically operated only. This cable is properly called the "lockout cable". Its main function is to provide more engine braking on a downhill grade. It essentially turns an overdrive trans into a standard three speed trans when pulled out, as mentioned in an earlier post. Any early '50's to mid '60's MOTORS or Chilton's etc. manual will have a wiring diagram and troubleshooting instructions.
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