i just got my friends 2000 civic si and it has the accel defi and the speed guage doesnt work temp guage doesnt work and the ac isnt wired, it doesnt have the stock wiring harness, im new to defi wandering if anyone can help me out thanks

 

I don't know much aboud defi gauges but know that they require a control unit that connects to the sensors and then to the gauges. Is that unit present, have you tested it and tested all the wiring. Also think this post is in the wrong place as I don't see anything related to forced induction !!!