There’s just enough space underneath the bottom nut assembly to insert it after rotating the shifter arm, but not a lot more. Racer tape to the rescue! We put the sticky side up on one segment to keep the nut in place, and the sticky side down to hold everything to the trans tunnel. Repeat for the front, and then the adapter can be put into place, and the screws tightened.
The installation instructions tell you to use a thread locking compound (not included). We didn’t do that – YET! The instructions also tell you about installing the shifter and jiggling it around and doing many other not-final-sounding things, so we decided that we were going to install the shifter twice. Once to test fit everything and run the car through the gears, and then once with all the rest of the liquid gasket and thread locking compound as required.
You will want to install the gear position sensor onto the adapter well before putting everything on the transmission unless you are installing the shifter adapter out of the car. Why? You need to rotate the gear position sensor so that, as the shifter adapter moves through the gears, you get the “correct” voltages. It ends up looking something like the following, where 5V is applied to the orange wire, the blue wire is grounded, and you read the output voltage on the white wire:
1 – 4.212
2 – 3.537
3 – 2.868
4 – 2.204
5 – 1.531
6 – 0.855
N – 0.528
Note that reverse has no indication here. This is because the reverse engagement isn’t related to the shifter adapter’s internals’ rotational position. To detect reverse, you need to use the factory T56 reverse switch, and handle your wiring accordingly.
In the SC300, we’ll be reading the analog voltage from the gear position sensor using the Autosport Labs RaceCapture/Pro MK2. Eventually, I’ll wire in the reverse position switch from the transmission, and then program the logger to detect it accordingly. The logger will use CAN to send the gear position to the AEM CD-7 dash, and then the dash will display the gear position.
If you don’t have a fancy programmable dash, S1 sells a segmented LED gauge that can be used to indicate the gear position.
Here is a close up of the Deutsch DTM pins that I attached to the gear position sensor wires. These will go into a 4-pin connector (because I had 4s and not 3s lying around), then go to the logger. Easy peasy, right?