Yes i have a 96 chevy lumina i changed the plugs and i think i may have switch the wires but dont know where they go directly

From standing in front of car and facing engine:

3.1L and 3.4L OHV V-6: The cylinder location is from left to right (rear cylinders) 1,3,5
(front cylinders)2,4,6

The coil terminals from left to right: 5,2,3,6,4,1
Firing order 1,2,3,4,5,6

3.4L DOHC V-6: The cylinder location is from left to right (rear) 1,3,5 (front) 2,4,6
The coil terminals are from front to rear 5,2,3,6,4,1
The firing order 1,2,3,4,5,6

3.8L V-6 cylinders left to right (rear)2,4,6 (front) 1,3,5
coil terminals front to rear 1,4,5,2,3,6
firing order 1,6,5,4,3,2

The firing order on this motor is (1,2,3,4,5,6). If standing in front of the car looking at the motor, the back side from left to right is (1, 3, 5) cylinders. Front row from left to right is (2, 4, 6) cylinders. The coil pack should have numbers on it by the plug wire representing the cylinder to where it goes. Just match them up #1 wire to #1 cylinder. #2 wire to #2 cylinder and so on. It may require a flash light to see the numbers on the coil pack. Good luck, hope this helps.

2,4,6 on the front bank 1,3,5 on the rear bank.