Black hills Trail Head coordinates

[stumper]

I know this would have helped up ALOT on our last trip. If anyone has coordinates to any of the trails in the hills,please post them up.

[ACAT]

Pilot Knob which is the south end of trail 89 (Centenial Trail).  N 44 08.687
                                                                                      W 103 33.362
I did not Mark Dalton Lake which is the north end of the 14 or so miles of the Centenial Trail that ATVs are aloud to use.

My map says Dalton Lake is at  N 44 13.87
                                          W 103 28.42 and the trail head is just east of it about 18th of a mile or less.