hi, i want to know where do the 2000 mustang gt uses all the grounds because i have an electrical problem because the odometer numbers gets bright dark etc but the mayor problem is when i hit the pedal the car sometimes (almost always) just turns off(makes like a pop sound before it gets off) and all the gauges goes alltheway up and then they go again to zero, i hit the switch again and turns on like nothing happened and i don't feel good performance (right now its sucks) now to the and in iddle sometimes is rich and black smoke by the exhaust and sometimes is ok and if you try to accelerate it to 4k (example) in neutral (the car is manual) the engine starts going up and down and smeels too much rich (wuuuupopopoowuuuupopopo something like that