Morris has a kit for $215.00. I am sure you can find a kit for less.
You can make your own relay harness for only a few dollars. The relays (2) are available at Radio Shack. Radio Shack no longer has many retail stores, so if you want to build your own, try Radio Shack online. You have to search for the sockets that the relays plug onto. After that all you need is 12ga. red wire for power and 14ga. green and 14ga. white for wires from to the relays to the headlamps. I didn't have any 14ga. black wire for the grounds, so I used a doubled up 16ga. Make certain to clean the areas on the back of the grill panel where the grounds attach and put a inline fuse in the red wire. It isn't terribly complicated if you plan ahead.
After I went through all the brain damage of making my own homemade headlamp relay harness, I found one already assembled for way less than $215.00 online. If you can find the cheaper harness, that is what I would recommend if you don't want to hassle with homemade wires.
Good Luck, L.M.