Need help with designing a simple12 volt timer for an automotive application
I have an idea to make a pre-oiler system for my car's engine. The idea is to hook up a 12 volt oil pump to bring oil from the pan up to the head to pre lube everything before I start the engine. This is to hopefully help prevent unnecessary wear on the engine. I want to have a timer to control the electric pump so that when the key is turned to the position just before "start" that it triggers the pump to start for approximately 30-60 seconds. The question is really, where do I start to look for information and parts to build this simple circuit? Also, would it need to be hooked up to constant power to store the timing program, or can it be just a simple mechanical/electrical trigger from the ignition to start the countdown?
Thank you for your time in advance,