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Now we get to dig deeper into the interior. Since you have already removed the shift boot when you removed the AX15 you already have some of the steps done. I did not take as many pics of this part of the install. There was some good music on the stereo in my garage that night and I kind of got on a roll :D
(If you need to remove the T handle from the shifter press the button in and give it a good yank. It will pull out allowing you to install the indicator panel.)
Remove the entire center console from the Jeep. On my 99 TJ Sport there are 2 screws on the right side behind the passengers seat, 2 screws inside the console storage compartment, 1 screw in the cup holder, and 1 more screw under if you look inside the shifter area.
Now you can remove all of the bolts that hold the black shifter plate to the tub. The manual one has a round hole in it, the auto one has a rectangular hole.
Screw down the auto tub plate. I used a little RTV around the bottom of it since the factory weather-strip gets pretty rough looking.
Bolt the TJ shifter to the plate using the 4 bolts.
Route the TJ shifter cable in through the firewall and snap the round part of it into the shifter bracket in the big round hole. Then clip the end of the cable to the selector.
Reinstall the center console.
Pull off the T handle so you can install the shift indicator panel.
Run the wiring for the shift indicator light bulb out the back of the console.
Install the shift indicator over the shifter.
Push the T handle back onto the shift.
Snap the XJ shift indicator panel into the center console. (Using the XJ shift indicator is optional. If you use a TJ indicator remember that 1 will actually be 1-2, and that 2 will actually be 3.)
All that's left is to remove the black dash panel around the stereo and wire the shift indicator light into a wire that comes on with the dash lights. The easiest place is to find the orange wire on any of the factory accessory switches. When you are done it should look like this with the headlights on: