Blitz FATT DC Turbo Timer Installation Directions
(This is based off of the HOW-TO that SRT ACE, on SRTforums.com, put together, thanks for the great pics and information on the install. Works great for the Greddy and the Blitz TT.)
With this installation the Airbag light will come on when the turbo timer is engaged and the key is out of the ignition. This is a do at your own risk installation, I will not be held responsible for any mishaps. Now that that is said on to the directions.
Helpful Info: Ignition Switch C1 - Black 10 Way. (this will give you the pin locations on the black plug).

Pin# - Color
1 - Red
2 - Dark Blue
3 - Red/Black
4 - Dark Blue/Black
5 - Light Blue
6 - Yellow
7 - Black/White
8 - Black/Orange
9 - Pink/Black
10 - Not Used
Not as helpful but someone might want to know: http://www.bulldogsecurity.com/diagrams/diagrams.htm
I used Blue butt connectors
1. First unscrew the two screws that hold on the steering wheel column. They are located under the steering column.

2. Pull them apart and ease them out by adjusting the tilt up or down.
3. Now unscrew the two screws at the bottom of the kick panel under the steering wheel and pull out towards you gently. It should start to pop out and you feel some resistance at the top where there are 2 clips that hold it to the curve plastic gauge bezel and the 2 to the dash. They should easily pop out without much pressure.
4. Next pull the red clips on the top of the black and grey plugs and push the second clips on the plugs to release them.
5. The harness from the Blitz FATT DC Turbo Timer has 5 wires. The 2 black wires will be grounded to some metal on the car. I chose a screw in the wall of the of the fuse box on the left of the dash.

6. Next splice the red wire from the TT harness to the thick red wire on the black plug. If you are looking at the plug it will be pin 1.

7. Now splice the green wire from the TT harness into the light (sky) blue wire. It should be pin 2.

8. Splice the Blue wire into the Black wire with the white stripe. Should be Pin 7 (UPDATE: After more searching I have found out that the Blue wire should be connected to the Black wire with the orange line (not sure what pin it is). This will eliminate the airbag light from coming on when the TT is activated).
9. Now fine the batch of wires in the passenger wheel well. Should be under the plastic in the center console. Cut a slit in the black plastic that covers it and find the white wire with the black stripe. Splice the purple wire from the TT into this wire. This is the Emergency Brake wire. If you decide not to use this make sure you ground it or the TT will not work.
10. Reconnect the battery and connect the TT to the harness and test it to make sure it works before putting it all back together again.
11. Run the wires behind the dash and mount the TT box somewhere you are comfortable with. The inside wall of the fuse box right in-front of your left knee.

12. Now mount the TT Control Panel (the part with the screen and buttons) somewhere on your dash where you can access it. I chose the spot right above the left vent to the left of the steering wheel.
13. Put the dash back together in the opposite order as stated above and you are done.
I am sure that this can be applied to some of the other Blitz TT's installations. Not sure which ones though since I don't own them. Good luck and I hope this helps.
Greddy TT Installation instructions on SRTforums.com with some great pictures.
http://www.srtforums.com/forums/showthread.php?t=5038