This location also doubles as an Ambush Camp, with a small Horde living inside the tunnel. You can even use that horde to take out the ambush Camp occupants easily. If you cleared the ambush camp first, sleep there during the night so when the time switches to day, the Checkpoint will be free and you can work on restoring its power.
The speakers are located in the following spots: * Light pole near some creates and an humvee near the road. * Two on the closed MMU * Light pole near the tent up the ledge * Two on the opened MMU * Guard booth facing the road
There are two gas cans in this Checkpoint; one is behind the tow truck along the road and one is near the guard booth by the concrete roadblock.
The generator is located near the closed MMU and the tunnel entrance. You’ll need to Repair the generator first with some scraps before you can turn it on completely.
After turning it on, you still need to find a replacement fuse. You can find the fuse from a hard case beside the tent up the hill as shown below. Interact with the fuse box to fix it and to restore power.
How to restore power to the Spruce Lake NERO Checkpoint