A-999 Swap and Information

Sedanman said
So not all of the A999 have a power wire on it to switch the OD on/off? The one that is in my car had a cast date of 1988 on the VB so I'm guessing dodge vans since 87/88 was the last year for RWD cars.

999 is not an OD trans, it's a 1:1 high gear. Are you referring to the lock up?

Also, lockup is hydraulically controlled by road speed/load, there is no switch.