Dash Electrical Help - 1987 V30

[Evil Trailblazer SS]

I have been coming across more and more "weird" wiring issues with the truck performed by previous mechanics and I am lost on a few of them! Any help will be sincerely appreciated!!!

In the main dash harness coming from the fuse panel up to the cluster, this Purple w/White wire is just sitting dead, what is this for?


Under the dash below the stereo, this harness is just sitting wound up dead...What is it for?


Green wire at the Black connector on the ignition switch on the top of the steering colum. Why would this be disconnected and what is it for?


Right behind the headlight switch, this little yellow wire looks like it comes all the way from the warning buzzer module on the brake pedal over. It is not plugged into anything and I cannot find where it "should" be connected! Also, the black wire accompanying it leads up from the fuse panel area. It can plug into the ground distribution block on the upper driver side kick panel, but what may it be for and is that where it is supposed to go?