Try checking the switches on the door frames. The switches are spring loaded; when you close the door it breaks the contact. Start with the driver's door. The driver's door receives the most use. Also: the switch can break and fall into the door pillar.
check your headlight switch or dash dimmer switch to be sure you do not have them turned on.
My 2000 model has a switch on top of the steering column for leaving the parking lights on when the engine is off. I don't know if the 2001 has one also, but if it does, try switching that.
That is exactly as it should be.
A SPST switch is the type used for turning the lights on and off in your home lighting systems. It is just basically just an on - off switch.
It's because they are not wired in a 3-way fashion. The switch downstairs is wired in series with the switch upstairs in the same manner the pullchain on a light socket adapter would turn on and off your light only when the wall's switch is on.
check dimmer switch for headlights
Change out the switch. Bad switch!!
check for short to power in the circuit
multi function switch( turn signal, lites etc)
Check the adjustment of the brake light switch.
Those tail lights could be the brake lights you are seeing and that would be a faulty brake light switch or the brake light switch is out of adjustment.
You can turn on and off the inside light by pulling in/out the switch for the front lights.
Brake Light switch works without the ignition on. unplug the brake pedal switch and check to see if the brake lights are still on..switch could be defective
The main dome light control switch is turned off.
Check the brake light switch.
Check the brake light switch adjustment.
There is a switch for that. It is in the dash illumination brightness control switch.