Converter lockup suggestions please.

[Longhorn 70]

I have a 700R4 in my pickup. It has performed well over the years. It was built and installed in 1997 and has gone through 2 motors and a lot of miles and worked well.

I like using the lockup feature of the converter for long cruises to save a bit more fuel and let the engine just purr at 2000 r.p.m. or so. It will only lock in 4th. I only have a toggle switch for the lock\unlock though. IF it is on, as soon as I go to 4th gear, it locks. So I make sure I go to 4th with light throttle pressure. I'd like to get a better set up for it that will keep me from having to reach for the switch and also make is so the wifey can drive the truck if she needs to. I have a proposed schematic below.

The way I see the schematic is...
Accellerate as I will and when vacuum levels off, a short delay after it goes to 4th gear will lock the converter when the master switch is on.

If I jam the brakes, hit the gas and drop a gear, the vacuum switch will unlock it and have to level off before the delay will let it go to lock again.

Does it look to make sense? If you would please, thoughts, suggestions, remarks, or bad jokes will be appreciated.

[cool68]

have you looked at the many aftermarket lock up kits for ideas or buy?

[Longhorn 70]

I have found a few including some on 3rd gen website. MANY times there are posts that say it doesn't work well. That is why I am asking here.... Lot's of smart people.

Also a lot of them call for GM14014519 which has been discontinued.

I think the TCI Kit uses something similar but $30 for a switch that may not do all I want it to may not work.

[luvbowties]

Originally Posted by Longhorn 70

I have found a few including some on 3rd gen website. MANY times there are posts that say it doesn't work well. That is why I am asking here.... Lot's of smart people.

Also a lot of them call for GM14014519 which has been discontinued.

I think the TCI Kit uses something similar but $30 for a switch that may not do all I want it to may not work.

Doesn't answer your ??? about the circuit; but to make life easier, quickly, why not just install a 2nd dimmer switch in the floor & run present wires thru it. This way, you'll not have to "reach" for the toggle, and foot-operated dimmers are so natural. **Also, wire in a master key-switch [to override the dimmer] & switch it off when anyone else drives it.** To protect from others getting confused with 2 dimmers, hide 2nd one underneath carpet where only u know where to find it. It works well; I know!
Sam