Join Date: Mar 2002
Location: Austin, TX, USA
Re: Lamp Question...
Modern cars use what is called a retained accessory power module that controls all those functions. It's not a simple device and even communicates with the ECM. For what you're trying to do, you'll need to build something custom, most likely. It will involve microcontrollers and all sorts of fun stuff - not available at your local radio shack.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI