Spark plug wires how do I know what wire goes where?

K your way from the back to the front, replacing the old ones, replace one at a time. Take two longest do the two back ones so on and so forth. Here is the firing order in the images below to help you get eh correct wire in the right place.

Firing Order 1-3-7-2-6-5-4-8

Check out the images (Below). Please let us know if you need anything else to get the problem fixed.

I have this hope that it helps

I know if they want cylinder positions, firing order, what lengths wires go where. When you post back with what you want we can get you what you want. Check out the images (Below)