1991 Custom

[GHSTDNCR]

Looking for turn signal color code info on my 1991 Custom. Replacing with new headlight/turn housings and sockets DRV/PASS. New sockets came all black wire (as expected) Three contacts inside 1@end 2 across from each other. If not off to trial-and-error method.

 

[Broncobowsher]

You are a couple generations too new. This site is based on the 1st get '66-77. Your '91 would be 4th gen.
But there is still help. Try fullsizebroncos.com, I hear they are full of information on this newer stuff.