Take Exit 75 for Williamsburg from I-25 which will put you on S. Broadway. Continue past the second gas station on the left and look for a solar panel field on the left and the Sierra County fairgrounds a bit further on the left. At the point where you see the Williamsburg Village offices on the right along with a street sign for Mona Avenue, turn left into what looks like an empty lot. You'll see a road in that lot that lead that heads towards the fairgrounds for a moment and then bears a left. At the t-junction a few minutes further along the dirt road, go left. (Note the junction for your return trip when you'll make a right to get back to Broadway. You'll see a street sign for Mesquite Lane on your left that marks your turn.) As you go under the interstate, set your odometer to 0. Head up over the dam, and at 1.4 miles (or 1.3 miles on some odometers), turn right into a large arroyo. A cairn marks that turn. Be sure to follow the visible tracks in the arroyo and continue for .5 (or .6) mile where you'll see a doubletrack road on your left that heads up on to the mesa. Follow that road to the water tank and park here (unless you have high clearance 4 wheel drive, and can park at the upper parking). This point is 2.9 miles from where you set your odometer. Walk to the end of the road and follow the cairns to the wall.

The first wall you'll reach is the Winter Wall.  Climbs here range from 5.8 to 5.12.  
Follow the trail along the base and descend a short, easy down-climb to reach the Crow Feather Wall.  Climbs here range from 5.8 to 5.12.  
To reach the Yellow Wall, follow a trail across the scree at the bottom of the down-climb.  
To reach the Vacation Wall, continue up the switchbacks along the Crow Feather Wall to the saddle.  Follow cairns west to a rock point where you'll see the Vacation Wall.

One of the best things about winter climbing in the T or C area is being able to take some time to enjoy some of its' eclectic experiences.  For a nice place to stay, Fire Water Lodge is a great local experience with in-room hot mineral springs tubs, and they allow dogs.. Rocket Inn is a good value with clean rooms and a nice bed.  They also allow dogs.  

Riverbend Hot Springs has hot mineral tub soaks on the river.  You have the option for both public or private tubs and a hot shower after a wonderful winter day of climbing.

Blackstone Hotsprings is a luxury lodging option with some interesting themed rooms with in-room hot spring tubs.

Other must-do stops are Passion Pie Cafe, which has amazing coffee and baked goods or breakfast before you head to crag.  For a more traditional breakfast check out the Old Brick Cafe or Carmen's ( not open Sunday).  Both are a good value.   The T or C brewery is very cool with live music, lots of good beer, and an amazing food truck in the back alley.   For a good value, the A & B Drive In is fairly fast and gives you a good local experience.