Second half substitute Eddie Kettlewell (on loan from York City) grabbed a 94th minute winner to end Garforths three game winless run in dramatic fashion.
Romario Dunne had given Brighouse a seventeenth minute lead, which lasted until midway through the second half, when Owen Marshall pulled the Miners level.
As the game looked to be heading for a draw, Kettlewell stunned home supporters with a late goal to give Garforth a much needed win on the road.
Garforth are next in action on Tuesday at Hallam, then on Saturday 28th February, at home to Ashington. Kick off 3pm.