nherbst454

Hello everyone, I'm currently installing a zex nitrous kit on my 2003 cobra and having a hell of a time finding the tach wire to connect to the window switch. Does anyone know what wire I can tap into inside the car to get this signal? I believe there is a signal fed to the pcm, (another post menioned pin #48 orange/white). I have looked at my connector and I don't have a wire in pin 48. Any suggestions?!

Thanks,
Nate
www.smoothflowpulleys.com
sales@smoothflowpulleys.com

nherbst454

I ended up using one of the coil pack signals (I believe pin #1 on the ECM connector) which is pink w/light blue line and it seems to work correctly as the engine speed indicated by the ZEX window switch matches the tachometer value.