We bought a used 2002 Classic 30' w/slide in April, 2008. After the first trip I suspected the brakes were not working as good as they should. I replaced the brake assembly w/new Dexter backplate, magnet and shoes. Shoes are adjusted properly. When tow vehicle,(2006 Ford Superduty Diesel), controller is manually activated - or when breakaway pin is pulled - you feel a slight drag from the brakes, not the lockup that should happen! I blocked the axles up, one at a time and pulled the breakaway pin. You could not turn the wheels by hand. So far I have only checked voltage at one wheel; it was 12V
when breakaway pin is pulled. I suspect a bad ground somewhere under the floor. (I hope Airstream doesn't use scotchlok connectors !!) I dropped the street side of the "pan" holding the water tank. The point where the ground wires join appeared to be ahead of the crossmember at that point. How do I get access to this area ? By drilling out the rivets in the belly pan cover and dropping the sheet metal far enough to reach in ? Maybe someone else has had similar problems and I'm headed to the wrong area to fix my brakes. Thanks in advance for any tips.