I've got an underhood light for a muscle car that I'm going to install. It's for a Chevy, but looks pretty generic--single wire, metal housing, with a switch inside that closes (makes contact) when the light is tipped at an angle--when the hood is up.
I got it from YearOne, but any metal-bodied position light will work. Being for a '60s muscle car, it has a factory appearance to it.
-Brad