Anyone out there know where I can purchase the transmission O/D switch, on the dash, left of the steering column. I haven't had any luck.
Thanks

 

This has been covered in another post in the past.
https://www.ford-trucks.com/forums/1...placement.html

The part number should be E9UZ-7G550-B


I have glanced through all of the sites like NOS and Rearcounter but have not come up with anything. You might try Green Sales and then their is always a salvage yard or used part.
Mark who is our FTE transmission specialist says in that thread that a momentary switch will work.

I believe this to be the wiring diagram for the switch


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If it cant be found anywhere and you want a heavy duty momentary switch, here is one listed for $15 and free shipping that you might be able to make work.
https://www.ebay.com/itm/27300028120...SABEgJYufD_BwE


It looks like there is a diode and resistor in the switch so if you are going to convert it to a single pole momentary switch then you would have wire it in accordingly.


Another possible option might be to use a switch from a bronco or F series. I don't know how it would fit or if the connectors are the same so you would have to check into that.
Right now I do not have the part number for the Bronco/F series switch but they are uses all over ebay. The problem on ebay is that they are using the part number stamped on the part and that number is an engineering ID number and not a part number. If you could find the actual part number then you might be able to find a new switch instead of used one. One of the pics shows the ID number stamped on the part and down lower that number is used as the part number. Many sellers do this.
https://www.ebay.com/itm/32466431508...iABEgLcmfD_BwE

 

Note: "It looks like there is a diode and resistor in the switch so if you are going to convert it to a single pole momentary switch then you would have wire it in accordingly."
The symbol I called diode is actually a LED (light emitting diode)

After a bit more research into how the switch works, the LT Green-White wire that connects to switch terminal #6 and ECM terminal 32 is for the Overdrive Cancel Indicator Lamp. So if you replace the factory switch with a momentary switch like Mark suggests, you would simply connect terminal #1 and #3 to the switch.

 

Thanks for the info.