shift position sensor failed, or wires are shorted
yes
The brake lights should not come one until you step on the brakes. The tail lights should come on when the headlights are on. If they're weak, maybe there's dirt in/on the lenses or maybe the bulb is old and clouded. Change the bulbs and see if that improves things.
Check stop light fuse Check bulbs (double filamented smaller filament is for stop lights larger for taillights) Check alignment and operation of stop light switch
The switch for the reverse lights on a Ford Windstar is typically located on the transmission. Specifically, it's often found on the transmission case, near the shift linkage. This switch is activated when the transmission is shifted into reverse, completing the circuit for the reverse lights. If you're having issues with the reverse lights, checking the switch and its wiring is a good first step.
It would either be a bad wire in the circuit from the brake light switch on the brake pedal to the bulbs, OR the bulbs have 2 filaments in them and the one that comes on when you apply the brakes are worn out, OR someone put the wrong bulbs in(single filament). I would change the 2 bulbs first.
Break lights come on when you step on the break, they do not come on when the head lights are turned on.
In a 2003 Vauxhall Corsa, the fuse for the reverse lights is typically located in the fuse box inside the vehicle. This fuse box is usually found on the driver's side, beneath the dashboard. You can refer to the owner's manual for the exact fuse number and specifications. If the reverse lights are not working, checking this fuse is a good first step.
May be its time to change your brake pads and rotors.
you may have your brake light socket and your back up light socket in the wrong holes. Or you have a short but that would probably leave you with a blown fuse and no lights.
If you step on the brake pedal , yes
Brake and parking lights? Are you sure, the two aren't interconnected. Maybe it's just the brake light. If so, sounds like a bad brake light switch. If you step on the brakes and the brake and parking (sometimes called running lights) lights come on it sounds like you have a real problem. Suggest you have it checked right away.
Light on dash? Check fluid level in master cylinder