Front side marker / turn signal wiring diagram for 1997 crown vic LX. Both directionals works, but parking light on driver side dosn't. passenger side works fine . 3157 bulb and only 2 wires to socket ! very odd.

DID NOT CHECK FUSES FIRST and look at all park lamps for dead. (all)
park lamps side and front rear right side fail?
is passenger on the right side?
K1500 you meant? Silverado 1500 ,2500 ,3500 or HDversions. I wll toss my dice again and is k1500
K= 4wd
PICKUP TRUCK NOT CAMPER SPECIAL OR UTILITY.
AND MARKER LAMPS TOO. (PARK)

the word tail means park, there are 8+ parking lamps
4 per side, the 4 corners and side marker lamps, all are called park now, (be silly to call front parks ,tails)
and 2 license plate lamps, and fuses.
fuse RR-park, see that there,?<<<< BINGO?
fuse LR-park (no)
FR-park
TRL-PARK

AND MORE
IT IS NOT THE PARK RELAY OR ITS FUSE OR ALL PARKS DIE,
SO WHAT IS IT. WELL FUSE BLOWN OR WIRES CUT
TO OR AT RIGHT SIDE PARK FEED.

does your car have the signal light flasher if so find it and replace it also check the fuses maybe both sides are fused separate

Go to http://www.bbbind.com/free_tsb.html free wiring diagrams ! You having tail light problems ? Do you know how they work ?

They are turned on by the BCM !
Park, Tail, Marker and License Lamps
The park, tail, license, and marker lamps are turned ON when the headlamp switch is placed in either the HEAD or PARK lamp positions, or anytime the automatic light control (ALC) turns the headlamps ON. When the headlamp switch is placed in the park lamp or headlamp positions, ground from G202 is applied through the signal circuit to the BCM indicating the park lamp request. In response to this signal, the BCM applies ground through the park lamp relay control circuit energizing the PARK LP PCB Relay. With the relay energized, battery voltage is applied through the switch side of the relay, both park lamp fuses, and the supply voltage circuits illuminating the park, tail marker, and license lamps. Ground for the left front park and marker lamps is provided at G101 and the right front park and marker lamps at G100. Ground for all rear lamps is provided at G302.
Turn Signal Lamps
The LT T/SIG and RT T/SIG fuses located in the underhood fuse block supplies battery positive voltage to the body control module (BCM) for turn signal and hazard lamp operation. When the turn signal switch is place in either the LEFT or RIGHT position, ground from G202 is applied through the turn signal switch signal circuit to the BCM indicating the turn signal request. In response to this signal, the BCM applies a pulsating voltage to the front and rear turn signal lamps supply voltage circuits cycling the lamps ON and OFF. The BCM also sends a message via GMLAN to the instrument panel cluster (IPC) to cycle the turn signal indicator ON and OFF depending on the position of the turn signal switch.
Ground for the turn signal lamps is supplied as follows:
?€¢
G101 provides ground for the left front turn signal lamp

?€¢
G100 provides ground for the right front turn signal lamp

?€¢
G302 provides ground for the left and right rear turn signal lamps

That's very odd, because the wiring for all of the side markers are just splices from the nearest park lamp wires- the rear tail light in the rear (and the license plate lamps are also splices from these tail lights), and in the front side markers, they are splices from the nearest park lamps. Do all the other park lights work and turn on with the park light switch on? I would examine the 2 wires from that side marker's socket to the wiring harness it goes into-the power wire would somewhere splice into the passenger tail light wire. The other wire would be a ground wire and also splices into a ground wire for the rear end. To be on, the marker lamp would have to be getting power from some live source. I can't imagine where. Does the rear passenger light work correctly?

In that harness to the rear where the park lamps run, there might be a live wire going to an electrical trunk latch switch, or maybe a trunk lamp. If the wires were frayed right beside the side marker wire, you could have some cross feeding of power between the two. Let me know, we always appreciate feedback.

Is the bulb holder rusty , it sounds like a bad earth. With a volt meter probe the bulb holder earth to the power terminal should be battery voltage. if not probe power terminal to metal part of body should be battery voltage if not fault in wiring.

I thought someone might have moved gas tank so I removed skid plate

If you have a test light, you can check for power at the light sockets and connectors. If you have power, you can connect the alligator clip on the test light to the positive side of the battery and test for a faulty ground...Good luck!

Front Turn Signal & Parking Lights



Remove the 2 parking light housing retaining screws ...



... then pull the housing away from the vehicle far enough to remove the bulb socket from behind the housing. Turn the socket counterclockwise and pull



Push the bulb in the socket gently and turn clockwise, then pull the bulb out of the socket. Note the offset retaining ears on each side of the bulb

1. Remove the screws from the lens and separate the lens from the headlight bezel.
   
2. Remove the headlight bezel.
   
3. Remove the screws from the turn signal housing and pull it out.
   
4. Turn the bulb socket counterclockwise 1/3 turn and remove it.
   
5. Installation is the reverse of removal.
   

Side Marker Lights

1. Remove the screws from the marker lens and separate the lens from the headlight bezel.
   
2. Pull the bulb from its socket in the back of the lens.
   
3. Installation is the reverse of removal.
   

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

you have a broken wire at the bottom of Ur rear end or bad connection