if you leave the parking lights switch "ON" the lights will remain on, even if the car has been turned off.
Some Subarus have a switch on the top of the steering column that turns on the parking lights. Hopefully this is the problem and would be an easy fix. Daniel
faulty hdlmp switch
Radio Engine Lights Wiper
That's how 1964 1/2 thru 1967 Mustangs lights are designed to operate.. when the headlamps are turned on the amber parking lights are turned off. That was changed sometime in 1967-68 so that the amber parking lights remain on when the headlamps are on.. It is possible to install a later model (1968) type headlight switch and wiring if you really want the parking lights to remain on when the headlamps are on however. Electrical Wiring drawings are available (to purchase) for every year mustang from almost any mustang restoration shop/website.
it would kill the batt.
If the service light comes on it usually mean there is maintenance needed to be done elsewhere than the engine. Try making sure all your lights work including break lights, turn signals head lights, parking lights, etc.
Check the fuses. There's usually a separate switch for the dash lights, which willmake them brighter or dimmer. It may be turned down too low. Check to make sure parking lights work as well, if they do not then could be the headlight switch as there was a recall on them.
Blown fuse? Damaged buss board?
because the lighting module is bad
Proper Use of "Parking Lights"The answer depends on the "Traffic Code" for the State in which you are driving.However, they are called parking lights because they are supposed to be used to warn other vehicle drivers of the location, position, and "state" [parked] of your vehicle.Most jurisdictions prohibit driving with parking lights only. The only exception that might convince a Police Officer to not give you a ticket would be in the case of the loss of headlights out in the boondocks on a very dark night in which you drove only with parking lights to get to a safe place.
There would exist probable cause to pull you over if the officer had seen you driving without your lights on even if you turned them on after you saw the police car and before you were pulled over.