Where to put Tach Sensor???

[SVXalter]

So I have my autostart fully installed. Everything works fine except when I remotely start the car it runs for a few seconds and then turns off... My guess is the tach sensor wire from the remote start module is not connected to the right spot. So my questions are:

1. Where do I connect the tach sensor? (currently I believe it is connected to a fuel injector wire)

2. Is there something else that could be causing this problem?

PS - The power door lock switches in our center consoles were made by Nissan haha. It says Nissan on the under side of it... I thought it to be quite funny.