Kinda pricey, but here's one:

http://www.solarseller.com/
dc_photoswitch__dc_timer__voltage_controlled_switch_dc_relay.htm

Jim

On Mar 30, 2007, at 10:34 AM, Bob Mac wrote:

>   Does anybody know where i can find a 12 volt timer. I would like to
> hook one up on my propex heater so it will turn on early in the
> morning.
> I have one at home 110 volt to turn the lights on and off. I need a 12
> volt timer.
>