Does anybody know on which wire I should install a switch in order to
turn the headlights off when the motor is running on an Eurovan 92 ?

I was told the simplest is to use an extra "rear defroster" switch to
achieve this.  I suppose I have to install it on a wire of one of the
relays, but which one ?  Anybody has an idea (or a wiring diagram at
hand) ?

Michel Pinard
pinardmi@ere.umontreal.ca