I changed the front heater motor (actually, I was GOING to change the heater motor because it was making a heck of a racket and not blowing as much air as I thought it should, and when I pulled it out, I found what looked like a rat's nest without droppings or the characteristic "rat nest smell", AND a LOT of dirt and even a few rocks!). So, having cleaned everything up and testing the motor by plugging it back in while sitting on the floor, I put it back in. Everything was good, the motor was quiet, had a ton of hot air blowing where it was supposed to. I also had a bad O2 Sensor (Bank 1 Sensor 2), so drove it up on the ramps to get underneath. That's when my ABS, Brake, and Traction Control lights decided it was Christmas and began to shine brightly. Decided to wait on changing the O2 sensor until I can figure out what's going on with the codes I'm now throwing. I didn't touch anything other than the heater stuff (but boy, was everything dusty and dirty under there!). Is there a nest of wires I may have disturbed and accomplished a bad connection while messing with the heater, or is it a supreme coincidence that the ABS/Brakes?Trac Control started at the same time? OR did something break or pinch when I drove it up on the ramps? Any advice or observations would be GREATLY appreciated!