I may be wrong, but I think the Game Winner timer that Academy sells will work with 6 or 12 volt. Seems like a good basic timer.
They have one that you don't have to mess with. It goes off and hour after daylight and an hour before dark.
I had one of those a long time ago it came with a 5 gallon bucket, it was okay but not what I wanted in a system.
Ended up buying this at Academy and forgot to share one of those thought I scored stories.
So I see this timer hanging with 3 others on one of those slide on metal displays and the price is $12.98 and I am grinning thinking score right
Take it up to the register and it rings up $34.99 + tax, so I say hold on a minute it read $12.98 and the guy rolls his eyes
So I stroll back there with another employee and sure enough they are hanging on the wrong rack
Oh well still half the price of The Timer and I have had two of these before and they work just fine
Not sure how the this much rain got in there but it was nasty!