'7427 PCM not receiving brake switch input

[Daveo91]

On that year model it appears the brake switch (cruise side) is a closed loop between the cruise module, cruise switch, and that half of the brake switch.

It appears that 7747 got the 12v brake switch signal for TCC unlock at pin a12 (purple wire) from a "diode module" that received the 12v from a switch on the RWAL from "gauge/idle" fuse.

Confusing as hell, hope that helps. Those old diagrams can be tough to follow the flow.

Definitely confusing. But thanks for looking at the diagrams for me. I took the bottom dash panel off tonight, poked around, and refreshed my memory about what I've done under there. There are two brake switches, mounted on either side of the bracket. One has both an orange and white pair for the brake light system and then a gray and gray/black pair for the cruise. This is the switch that comes up if you search for "brake light switch" on Rock Auto. But then the other switch (the top one in the pic below) should have a pink/black and purple pair connected to it with the purple going to the PCM (E13 on '7427, A12 on '7060/'7747). But this switch is non-functional - plunger is gone - and the purple and pink are jumpered together. This explains why my PCM thinks the brakes are never applied. I had tuner pro data logging on and I tested this by removing the jumper - brakes registered on. So....I know I need to replace this switch, but I don't know what it's called. Haven't been able to find it on Rock Auto or anywhere else.

Back story on why the switch is disabled: it was noisy, made an annoying loud click every time brake pedal was pushed. I ordered a brake light switch to replace it, but quickly found out that was not the problem. So I was removing this other switch and the plunger fell out so I just left it there realizing that I'd probably have to replace it eventually. At that time I thought it was just for cruise, but of course I know now it provides the signal to the PCM that the brakes are applied. The weird thing is I'm not the one that jumpered the pink and purple together. That was done prior to me owning the vehicle so it's been like that for a while. I want to get it back working correctly so I need to figure out a normally closed switch for that location. I'm pretty sure the brake light switch is normally open so I wouldn't be able to use that? What about the cruise part of the regular switch? Is that normally open or normally closed?