FROM HARTFORD: Rte. 91 South to Rte 9. South to Exit 2, Left at end of ramp, 3/10 mile on right.   FROM NEW HAVEN: Rte. 95 to Exit 67, bear left to end of exit ramp, left turn onto Rte. 154, 1 1/2 miles on right.   FROM NEW LONDON: Rte. 95 to Exit 69, Rte. 9 North to Exit 2, left at end of exit ramp, bear right onto Rte. 154 North, 3/10 mile on right