I think your advice has been sound and now that BRD has a manual, it should make life easier. Pretty hard to copy or follow the path from a bunch of small glimpses. I do think it is possible there are some differences in the headlight door module but I am not at all certain. I remember when I was going through my own headlight travails, pretty much a problem of my own creation, Dave gave me a couple of modules to test, but I don't remember what they were from, although I think it was from another GM with pop-up headlights and they did not work on mine, but dim memory that they did work on an 89. I shouldn't even bring it up, because it may be misleading.