4spd Trans - Additional electrical plug?

[CruiserNub]

I picked up a 4spd trans on ebay, 74-80 by position of the yellow wired backup light. Can anyone tell me what the black wired/green plug hook up is for? Can't find it in any parts diagrams.

 

[cruiserjunkie]

Looks like a neutral safety switch but I'm just guessing

 

[JohnnyC]

"shift point" sensor AFAIK from something like 77-79 trannys

hense ...not needed in your 69

 

[PixelWrangler]

The switch looks like a back up switch for a 60 series 4 speed, but the Tranny case top is different than the one SOR shows.

Image from SOR

Your's looks like it's had a 60 series switch added for some reason.

 

[CruiserNub]

"shift point" sensor AFAIK from something like 77-79 trannys

hense ...not needed in your 69

So just plug it off or just leave this in as a plug?

 

[tornadoalleycruiser]

Nss leave as a plug or wire starter solenoid thru to use it properly i remember them being used on a78 pig i had

 

[JohnnyC]

x2 as ^^

 

[inkpot]

I am pretty sure that was used by the emissions VSV to read when you are in 4th gear. Controls dizzy advance/retard. HTH John

 

[Cruiserdrew]

I am pretty sure that was used by the emissions VSV to read when you are in 4th gear. Controls dizzy advance/retard. HTH John

That's what I thought too. Also controls EGR which is supposed to be open at steady state cruise.

Doesn't really matter-it sounds like you don't need it.