re: DIY red or green feeder lights for pigs

I've got the motion activated lights by my carport that uses the solar recharging batteries. It puts off enough light to see and was thinking of running them around feed piles/ feeders after deer season for this reason. They were very cheap and have lasted really well. The switch that turns it off after a few seconds has gone out on one though so once it comes on it just runs until it's dead. Which is actually a lot longer than you'd think, runs for hours before batteries are dead. It's two or three years old though.