OMRON 12 Volt Time Delay Relay Link eBay

The link to is to a genuine OMRON 12 volt EASY TO USE relay. Time delay to 6+ hours. The power contact rating is only 3 amperes but it would be piece of cake easy to fire a relay with the signal. An ideal general purpose relay to use to limit gen runtime.

http://www.ebay.com/itm/270617325809