I have an 04 6sp, my friend and I were installing a sound system in it and while i was doing the speakers behind the head rest he was installing the amp, he touched some cables and didn't tell me. Now my car won't turn on, I was able to get it turn it on by pushing it in 2nd gear. I'm sure it's a short circuit but everything works fine except my oil pressure guage and the fact that it doesn't turn on. I hear the fuel pump start up and the relay click and I also checked the oil pressure and it's fine. If anyone can help please lmk thanks!!

 

Jeebus

 

Welcome, but anytime you are doing any working on any type of electronic work on your Z, you should always disconnect the battery. It's impossible to tell what you've blown, but you could start by inspecting all the fuses and relays in your car. Do a search of this site and you'll find information on this.