Ground wire headlights crown vic - 1996 Ford Crown Victoria

so left front blinkers fail or not.????? other shoe drops.
fuses blown
wires a mangled LR
lamp socket there a mess.
trailer hitch wires hacked in hear still a mess as all hacks are.
grounds to LR is bad or rusty or mangled wires ground.

Ck the bulbs, ck for power & ground at the sockets w/ headlights on, Poss headlight switch, relay & fuses with a test light.

I'm having a problem with my right headlight on my crown 2008 crown vic, whenever it rains my right headlight won't turn off, even when there's no key in the ignition, sometimes it turns on by itself if the car is out in the rain, any help would be much appreciated

The headlight switch has a built in 22 amp circuit breaker. It maybe doing it's job by opening and closing to prevent an electrical wire from burning. It opens when there is a 12 volt positive short to ground (negative). This may be caused by something as simple as a bad or damaged bulb. ( pull the headlight switch to the first position. does the parking lights blink on and off? if so then the short is in the parking light circuit. If not, then pull the switch all the way out. Does the headlights blink on and off? if so then the short is in the headlight circuit.) Check high and low beams.
When the lights are on, visually look to see if any light is not working. If there is a light not working, it may be the point of the short. The built in circuit breaker may also be shorting due to a damaged wire to a light caused by body damage, road salt corrosion, a wire that has fallen against the exhaust manifold, a pinched wire going to the license lamp, or other condition that would damage a wire.

check the ground wires and connections to the frame and engine

Check all the bulbs at tail end for parking and brakes, test grounds and harness for trailer. Check fuses. clean batery terminals, Re instal head light swich properly and make sure all wires conect.
Vitally

look under the hood in the big fuse panel and look for High beam headlight relay the relay is more than likely bad

Check the starter solenoid. Usually mounted on a fender well. Find by following the + battery cable.

Reminds me of a bad headlight switch.Could also be a loose ground or loose power wire though.