Help figuring things on my Audi
 

I have a 91 Audi 100 Quattro that i need a few things figured out. First, is there vacum lines I can check to get the cruise to work? I have checked fuses and they all seem to be in order. So I don't know if the switch or the lines are bad. Anyone know about the abs system on them? Or least why most the time unless I pull it out of gear or slowing down, i get a stiff pedal. But when I start slowing down or pull it out of gear/put clutch in, I get a soft pedal. Also, I am trying to figure out the picture of a wheel with hands? on the message system area. How can I get the full dash to light up instead of half the dash. I can't see anything slower than 55-60. i can kinda see it when i found the dimmer.