What order do the spark plug wires connect to coil pack on a 4 liter 6 cylinder?

There's no single answer to this question. The firing order of a 4.0L 6-cylinder engine, and therefore the spark plug wire connection to the coil pack, varies significantly depending on the *specific* make, model, and year of the vehicle. The coil pack itself might be a single unit or multiple coils.

To find the correct firing order and wiring diagram:

1. Consult your vehicle's repair manual: This is the most reliable source. The manual will have a diagram showing the correct spark plug wire routing.

2. Look up your engine code: The engine code (often found on a sticker under the hood or in the owner's manual) will help you find more specific information online or at a parts store.

3. Search online using your vehicle's year, make, model, and engine code: Many forums and websites dedicated to automotive repair have this information. Be sure the information you find matches your specific engine.

Without knowing the specific vehicle, I cannot provide the correct wiring order. Incorrectly connecting the spark plug wires can seriously damage your engine.