Hi Kent, welcome to LTG! You ask a very good question! It's a bit a mystery, there is really no original wiring diagram that I am aware of. I have the same issue, I own a April 1987 Nightbird GG and the pickups are changed to periode correct HB-1s, which is great, but the wiring is also a bit strange to me as are the components which are not all original. So I was also searching but there are almost no pictures of the potentiometer chambers online for instance. I just found 3...
Our member GAD covered a lot of info in his blog posts, but not the original wiring diagram. Have a look anyway:
Guild Nightbirds are some of the best electric guitars every produced at the Westerly Guild plant. I own more than my fair share of them, and since I have a pile of Nightbird reviews pending I thought I would consolidate some of the repeating information I had into a single article. Nightbirds...
www.gad.net
Today we’re going to take a look at the Guild Nightbird I. Not the Nightbird or the Nightbird Custom or The Nightbird GG, or… You know what? We’ll talk about the crazy number of Nightbird models later. For now just accept that this is a Nightbird I. This isn’t really a model that I lusted after …
www.gad.net
I was given the unique opportunity to replace the pickups in a Guild Nightbird. This guitar came with Fender HB1 pickups but the owner had managed to get some NOS Guild HB1 pickups in matching gold from the world’s finest purveyor of hard-to-find Guild parts, Hans Moust. When asked if I would do...
www.gad.net
It would be great of members who have original 1985/1986/1987 Nightbirds could post pictures of the opened potentiometer chambers here, so we could see what parts and wiring was used by the factory. I have seen various push-pull pots for instance...
Do you have one with the square or triangle chamber?
Ralf