I have a 13b-re cosmo rotary in a sand rail and I have the stock wiring harness and stock ecu for the engine. I just need to know where the positive and negative go on the ECU to turn it on. Or does the ECU get power from the wiring harness somewhere... I just need it to turn on is all and i know some of the basic requirements of the harness but i just don't know where the power is coming from. Any help would be great!