I decided to go through the trouble of installing a Momentary switch in the gear select arm.  A Momentary switch means that it will only connect the circuit if the button is pressed.  As soon as you release the button the circuit closes.  IE: Pressing it will complete the Ground and trigger the Torque Converter to Lockup, as soon as you release the button the Torque converter lockup will release.  This fixed the issue of forgetting that the switch was on when coming to a stop.  I found that in the cases where I wanted to use the lockup switch I was already using my right hand to shift down or disable OD.   It was only natural to think that a lockup switch on the Gear Selector would be nice.  

This DIY is not for how to connect the lockup switch, You can see how to do that by clicking here. 

Sorry for the blurry pictures.

 You can use any switch you like, so long as it fits.  The switch I used was 1 Black Momentary Off on Push Button Horn Switch | eBay
Your switch should be no deeper than ~1/2"  

This will require taking the truck out of park to adjust the shifter, so ENSURE YOU APPLY THE EBRAKE AND CHALK THE WHEELS BEFORE YOU START.
 

Article for this mode is found below.

 

Edited February 18, 20169 yr by Me78569

Nice write up! Once I get my PCM flashed (my truck's build date is 11/95) I'll be installing a lockup switch. 

I would highly recommend a momentary switch for the lockup.  It is VERY nice to have it only lockup when your pushing the button.  

Even though I would love to automate 2nd gear lockup, and I am actively working on it,  I can manually shift 1-4 controlling lockup in 2-4 without issues.  2nd locked is a monster.

A momentary switch is definitely the way to go. I too would love to automate it, if I had the money I would try one of the aftermarket PCMs. I wish my VB was set up for 2nd gear lockup, I need to see what needs to be done so it will.  

Thanks, and now I get another switch or two to play with! Very good and detailed wri5e up