Check the connectors that attach to the cluster harness (behind the glove box) and also the ones that go to the connectors by the fuse box near the battery. If they are the same as the manual harness you're good. You should go back and grab the tranny bracket and mount by the battery in fact grab all the brackets attached to the transmission. The front and rear mounts are usually shot you can use the auto mounts but they do move around too much I've tried. The rear mount I'm using a Celica one front from the auto transmission.