Im runny a d16 with a greddy kit , i went and set up my oil pressure gauge . it wasnt working right when i conected all the wires , although i did throw my instructions away lol . When i got it hooked up to the way i thought it would work i ended up with a check engine light and my speedo doesnt not work all it does it fluctuate . Please helo it u can !!!

 

Pull the code first....Search how to do this. It's better explained with pictures

Most likely you just blew a fuse.