Neutral Safety Switch Adjustment
Source: by Tim O (RED WAGON, redwagon) at http://fullsizebronco.com/forum/showthread.php?t=149087
Tim Wrote; "...Place transmission manual lever in neutral position, then insert a .091 inch gauge pin through gauge pin holes, Fig. 8.
Tighten switch attaching bolts, then remove gauge pin..."
Neutral Safety Switch (also referred to as Back-Up Switch) Installation & pics in an 89; "...It probably took me a total of 5 minutes to change this part. As you can see in the pic it has two bolts holding it on and one nut holding on the downshift lever. the hardest part is the downshift lever has to be immobilized while you loosen the nut. You can do this with a screwdriver like me or the book says to use a guage rod or something. You can get to it on the drivers side of the tranny. Here is a pic of it installed..."
Source: by Mad Dog Tannen http://fullsizebronco.com/forum/showthread.php?t=173118&page=2
Neutral Safety Switch Wiring Color Codes in an 89
Source: by Uncle_Monkey at http://fullsizebronco.com/forum/showthread.php?t=173356