Chevrolet Astro Forum : “Where is the neutral safety switch? (back-up light switch)”

Yeah its a half Moon type switch and sits directly on top of the steering column. Column lowering is essential to proper installation
Good Luck

hmmm...okay, just for fun...I was able to reach in with a pair of needle nose and pulled each of the two plugs attached to the neutral safety...before lowering the column I wanted to see if I could reproduce the ignition failure deliberately.  i counted a total of three wires. one double plug and one single. i removed each by itself and turned the key. with one or the other plug removed, the starter would still turn after one or two tries. how is that possible? shouldn't one of those plugs interrupt the ignition circuit? I checked the wiring diagram in the chiltons, and mysteriously...they don't even show a neutral safety switch in the ignition circuit, but hey do show a "park switch" in the middle of windshield wiper controls. possibly related or not, there's a bunch of slop in my gear shift lever, which I always assumed was related to the neutral safety. the linkage rod wiggles around quite a bit, but it's just some washers and a bushing where it attaches to the arm that goes into the column, so I think the play is originating from the column and not the linkage. of course, the chiltons book doesn't even show the gear shift lever assembly at all in the book. any insights? thanks.