Open the Control Box
- Disconnect the power.
- Use a 1/8” Allen Key, loosen the four bolts on the faceplate.
- Unplug the power harness from the mother board.
GPS Battery Replacement
- Locate the BR1225 coin type battery.
- Using the pick, push the battery out of its cradle.
- With the positive side of the battery facing down, slide the battery into the cradle.