4L80e external wire harness bracket

[Big T]

Can’t figure out how this bracket installs:

 

[Big T]

Also cannot find a plug for the rear speed sensor

 

[Glagulator]

The conn. at the arrow should lead to the rear VSS, on the x-fer case.
It is a "union" to the rear VSS conn.
The speed sensor bracket is normally part of the speed sensor.
Anyway, this is how they are bolted on.

 

[Big T]

The conn. at the arrow should lead to the rear VSS, on the x-fer case.
It is a "union" to the rear VSS conn.
The speed sensor bracket is normally part of the speed sensor.
Anyway, this is how they are bolted on.

Thank you for the pictures, they are extremely helpful.



The circled plug was plugged into what you are calling the transfer case VSS about where the red arrow is. Based on another video and confirmed by your picture, it's position in the harness relative to the large grey plug below it confirmed it went to the rear output sensor, as did that bracket. Now it leaves an open socket to what you are calling the VSS to the transfer case, so I am lost as every plug on the transfer case harness has a home.

The yellow circled portion of this VSS union is what went into the rear transmission sensor:

 

[Big T]

It does go from the empty plug to the transfer case:



But what plugs into the empty plug?

 

[Glagulator]

If you have a 99 then the ISS speed sensor at the front of the trans will have DK BLU/WHT & RED/BLK wires.
The VSS on the x-fer case will have LT GRN/BLK & PPL/WHT wires.
The rear speed sensor on the trans is not used.
I have seen these conns. get mixed up.

 

[Glagulator]

There should be a short harness from the VSS to the now empty union conn.

 

[Big T]

If you have a 99 then the ISS speed sensor at the front of the trans will have DK BLU/WHT & RED/BLK wires.
The VSS on the x-fer case will have LT GRN/BLK & PPL/WHT wires.
The rear speed sensor on the trans is not used.
I have seen these conns. get mixed up.

VSS at Transfer is green/purple.

Thank you so much.

 

[Glagulator]

Do you have the push button 4wd or floor shift?

 

[Big T]

Do you have the push button 4wd or floor shift?

Push button.

 

[Big T]

Actually repaired the VSS with a pigtail and Paveltolz’s notes say yellow and purple. I just know that purple was the left side when staring at the plug.

 

[Big T]

There should be a short harness from the VSS to the now empty union conn.

There is I got the plug back to its proper place. I was wondering about this as the rear sensor was filthy inside. A filthy female socket.

The amount of time I lost trying to figure this plug out….

 

[Big T]

I went and check the ‘99 4L80e transmission I have stored in the basement and it is not even tapped for the rear sensor:

 

[vr1967]

I went and check the ‘99 4L80e transmission I have stored in the basement and it is not even tapped for the rear sensor:

View attachment 89513

The case has a blank plug in it where the rear sensor on a 2wd would go. It probably doesn’t have the reluctor for the sensor to rear.