What are these wires for?

[bnoon]

Originally Posted by Ardee83

So to continue with the lock up wire not being connected.... when I am driving in OD the transmission seems to slip and the rpms will jump and the fall right back where they were. This happens very quickly. After reading some of the other forum posts with people having the same issues, they were advised to unplug the lock up wire. Could mine be slipping because its not hooked up? What could be causing it to slip?

No, the transmission will simply be in 4th gear without lockup. It will not cause any other issues. You can test to make sure you're getting voltage to the solenoid, and run your ground wire to a temporary switch (or just hold the ground wire to ground while driving to lock it, then unground it when you slow down to unlock it). That way at least you know it works before you spend money on a new vacuum lockup switch.