Low & High Beam Headlight Conversion for 97 F-150

Anyone know of a conversion kit for a 97 F-150 that allows the low and high beam headlights to come on together when on high beam? Or, anyone have info on how to make up such a conversion by using relays? I've seen the kits for GM but can't find anything for Ford. I'm thinking maybe the GM kit could be modified to work on my F-150. Any ideas? I did a search on the forums and didn't find anything.