Team Celica

The Tuned Innovations Groundwire Kit is the best kit out for the 7th Gen Celica GT/GT-S. It utilizes the best possible grounding points with the shortest ground lines for maximum gains. Here is an install that will help you make sense of all those wires.

The Tuned Innovations kit may be purchased HERE.

**Caution, Team Celica, Tuned Innovations nor the authors of this install are liable for any problems resulting in the use of the following information. Use this information at your own risk**

Tools Required:

3/8" drive ratchet
socket extention
12mm Socket
10mm Socket
5mm allen Wrench
Flathead screwdriver
Groundwire Kit

Allow engine to cool for a few hours before attempting this install.

1) Disconnect both battery terminals before starting.

2) Remove Plastic Valve cover protector, and front left large engine cover (4 bolts,5 clips, 5mm allen(GT-S)). If You cant figure out how to do this, turn back.. cos it only gets harder (heh its not really hard)

(click on images for larger view)

3) Remove the battery tie down, and remove the battery.

4) Remove the Large fuse box cover.

5) Remove the bolt that connects the ECU to the Fuse Box.

6) Remove the white battery tray, and the 4 bolts that hold the battery plate in place.

7) You need to unbolt this 5th bolt under the ECU and the wire harness clip shown. This may take some manuevering of the ECU box to get to the bolt.

8) Now we are ready to begin the Wiring. In the pictures following, you will notice there are 8 numbered ground points and 6 lettered wires. The wires should be matched as follows..
A=21" wire
B=8.5" wire
C=9.5" wire
D=26" wire
E=11.5" wire
F=11.5" wire

9) Connect wire A to ground point 2 (grounds the battery to the chassis).
Connect wire B to ground points 2 and 3 (grounds the tranny to the chassis).
Connect wire C to ground points 4 and 5 (grounds the block to the chassis).
Connect wire D to ground point 5. (grounds manifold and block)
* Note the auto trans point and manual trans point are slightly different, and in the manual trans pic shows wire C grounded from points 5 to 3, but you want to use points 5 to 4 instead.

Here is a closeup of point 5, so you can tell which bolt to use.

10) Wire D will continue around the front of the manifold and connect to point 6. (tuck wire behind lines and under fuel rail)

11) Wire E will connect from point 6 (above) to point 7 (grounds manifold to chassis). This is easiest if you remove the Power sterring resevoir (push the metal clip in with a screwdriver, and pull up on the resevoir)

12) Connect wire F to ground points 7 and 8 (grounds altenator to chassis).

Now reassemble everything in reverse order. You need to connect wire A to the negative battery terminal (point 1) after you put everything back together.

You can hook it up as shown, or buy an aftermarket terminal to hook it to, and remove the stock negative terminal alltogether.
If you have any questions or comments email: Tuned Innovations. Enjoy!

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