Unfortunately,  my overdrive problems continue.  Before I was able to get the O.D. solenoid installed, I bench tested the replacement with a 6 volt battery and it seemed to work fine.  I installed it and road tested the car repeatedly but the overdrive would not engage even at 50-60 MPH when I would back off of the accelerator.  I printed the Borg Warner O.D. Manual from the Internet and went through the tests of the electrical components still installed in the car.  The relay tested good and the solenoid seemed to be O.K. at first but after repeatedly getting it to click it started making a buzzing or throbbing noise.  I got under the car and took the solenoid cover off to check the points.   I grounded the governor wire to activate the solenoid with the ignition on so I could watch what was going on  inside the solenoid.  I saw arcing between the points and the buzzing noise was caused by the plunger trying but failing to fully extend.  There was some oil inside the solenoid which I cleaned out and I cleaned the points with some fine sandpaper.  I left the cover off and road tested the car again but the O.D. still did not engage.  Even worse, the speedometer stopped working on this test drive so the nylon speedo driven gear probably stripped out for reasons unknown.  Are the points inside the solenoid supposed to open and close when power is applied and then removed?  Watching them with the cover off the points stay closed and the plunger now appears not to be fully extending.  Also, I have not tested my governor and I do have two replacements (condition unknown).  I see that the governor can be tested with an ohm meter by spinning the gear on the wire wheel of a bench grinder.  I have a multi-meter but I don't know how to test ohms.  Can someone explain what to set the meter on and what to look for as far as a result on the meter?   Any other suggestions would be great.  Alan