stupid question for you guys...im installing an air-fuel and boost guage into a 2000 si....what color wire under the dash is for the power and what for the ground....also....i believe i can hook the air-fuel up to the all white wire going into the ecu.....does that sound correct?....help quick...im in the middle of the install and stuck.....

 

For power, you can splice into the one igntion wire that supplies power when you turn the key, its black and yellow. For a ground use a good metal surface.