Multiple Items, will be a long read... Alarm at 3;30AM, 2 Stage Fan Clutch, and other

[KenEhresman]

ok, crap second time typing this... so here we go again... awoken at 3:30 by alarm... sounds like Polizei coming after me on the autobaun.... noticed a very faint version of this at 10 when we went to bed but could never locate so thought it was a coach or rv near us...nope, after 10 minutes of searching and another 10 of dismantling dash I found it. was just near the door hinge and thank gosh had a plug. fwiw, i did unplug the little black box and also the keyless entry brains thinking one or the other was turning it on, but neither had an effect... it was kinda cutting in and out a little cracking so I'm pretty sure something is failing but not sure what circuit or purpose this serves... not related to air pressure, tag or other chassis stuff, but did look like it was a prevost chassis plug and labeling... anyone know what this little gem is and what purpose it alerts us to?

next, With bad weather I got a weird Pro Driver Error, VSS Sensor issue... which with some research was kicking out the correct codes for Vehicle Speed Sensor.... was intermittent and seemed to come on after driving through snow and ice... I'm suspecting a connector somewhere... the dash speedo continued to work, but all other speed related functions such as cruise stopped working...it would clear upon turning coach on and off then was ok until bad weather again. Any wiring diagrams or schematics for the pro-driver unit, or this VSS sensor location and plugs would be helpful.

finally, I"m pretty sure my low speed fan relay isn't working... it's cold, and not florida cold lol... so this will have to wait until at least a 40 degree day, but any schematics of for fan clutch system would be great. It runs pretty consistent at 210 ish, and when it get to 220ish the fan kicks on and brings it back down to 200 ish... i removed the 190 thermostats and replaced with 175's which help but not enough.... also I can work around this by turning on the dash ac compressor switch, which cycles the rear compressor every once in a while which keeps it a little lower about 190 ish. On a hot summer day, when i run the dash AC it runs right at 175-180 so I know the ac compressor circuit it locked in much more for dash air.... any help here appreciated.