Wheel bearing noise

I am chasing down noises on my 87 Ramcharger that had been sitting for several years before I bought it. I replaced the pinion bearings in the rear, but not the carrier bearings. I have a whining noise at different speeds and when I turn the wheel to the left it goes away and when turned to the right (while driving) it gets louder. I'm leaning towards an axle bearing, but will a carrier bearing make the same sounds when they are bad? I did not pull the front carrier apart yet, but I did re-pack the front bearings when I did the front brakes.
Am I heading in the right direction with the wheel bearing?