Something else to keep in mind is alternating power and ground. Just went through this with my pickup. Not 100% sure about the 85+s, but on my 80, and my 81 there is always power to the headlights. When you turn the switch on, it supplies a ground for the current. When you turn on your high beams, the ground that is used is changed. Double check that your headlights are alternating ground from the factory as well as the new ones. If the new ones are alternating power, you can either make a relay harness with 2 relays getting power from something that is only on when the engine is running, like the alternator post, use your alternating ground to give one relay or the other power, which would send power to the new headlights.
Once you know if you have double ground, or double power harness and lights I can make up a diagram to show you what you need to do if they are different.