I have a 02 em2 and I did a few silly things so I ended up having to purchase a new clutch line and connector for the master cylinder. Unfortunately, they are not fitting together and now my car won’t start. When I turn it over, the gauges just go haywire and there’s a clicking sound which I’m sure is coming from my ecu. Any advice?

 

I don't think there's anything that clicks like that inside the computer. And the hydraulic stuff is going to basically be separate from the electronics. Sounds like you just don't have a strong battery to me but then you said you did some stuff to the car so who the hell knows for sure.

 

Check your ground cables I forgot to re attach a ground and the car would crank and not start and then the gauges would go crazy but would start if I plugged in OBD2 good luck