I have an 1979 ford fairmont wagon . i replaced the front parking light socket. it worked fine for about 10-15 min then all the parking lights,inst.panel, taillights, side marker lights went out. so i replaced the light switch,fusable links that come off the siloid.checked all the bulbs. i still have headlights( hi and low), brake lights,4 way. checked all the fuses. i'm confused
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Did you check and ground, anywhere? Usually the front and rear park lamps are the same. Do the front park lamp works? The circuit usually goes hot when you turn on the head lamp switch. Did you check applicable fuses for voltage? Use a test lite to check voltage.
If front park lamps work, I don't think it is the fuse, probably the wiring circuit going to the rear.
Disconnect the negative battery cable.
Fig. 5: Remove the trim panel fasteners - except wagon
Fig. 6: Carefully remove the trim panel - except wagon
Fig. 7: Pull the lamp assembly straight back and out of the opening
Remove the trim panel fasteners, then carefully remove the trim panel.
Remove the 2 retaining screws from the side of the lamp assembly, then pull the lamp assembly straight back and out of the opening.
Tilt the assembly downward for access to the sockets, then twist and remove the socket(s) from the lamp assembly. Replace the bulb(s), as necessary.
Installation is the reverse of removal.
Fig. 8: Tilt the assembly downward for access to the sockets
Fig. 9: Twist and remove the socket and bulb from the lamp assembly
Raise the liftgate, then remove the wedge blocks from each side of the liftgate assembly.
Remove the lower fasteners from the liftgate lower trim panel, by pushing in the center of each pin approximately 1?8 in. until it clicks, then remove the fastener.
Insert a screwdriver or small prybar into the hole in the lower trim panel (located near the wiper pivot on the pivot hump) so that the tool sits on top of the pivot. Lift up on the tool handle to disengage the trim panel upper clips, then remove the lower trim panel from the vehicle.
Unplug the high-mount brake light wiring harness.
Remove the brake light fasteners, then remove the lamp assembly from the liftgate.
To remove the bulb(s), push slightly on the top edge of the lens and rotate it away from the housing. Remove the bulb(s) from the housing.
In order to prevent the possibility of water leaks into the liftgate, inspect the lamp gasket for damage and replace, if necessary.
If removed, install the bulb(s) by inserting the bottom edge of the lens into the housing and snapping it into place.
Position the lamp into the liftgate and tighten the fasteners to 35 inch lbs. (4 Nm).
Connect the wiring harness to the lamp assembly.
Align the upper clips on the lower trim panel to the liftgate slots, then install the panel by pushing at the clip locations.
Reset the trim panel push-in fasteners by spreading the center pin tabs and moving the pin so that it sits approximately 1?4 in. out of the fastener. Insert the fasteners into the bottom of the trim panel and push the center pin until flush.
Install the liftgate wedge blocks.
Connect the negative battery cable and check for proper lamp operation.
Fig. 12: Removing the liftgate lower trim panel assembly - wagon
Fig. 13: Exploded view of the high-mount brake light bulb and lens assembly - wagon
1.Unplug your taillights at the sockets and the front running lights from sockets.
2. put in new fuse after unplugging taillights.
3 turn on taillights if fuse blows then the wiring is grounding out somewhere between the switch, fuse panel, and rear and or front parking lights.
4.If fuse does not blow then plug in one socket at a time keep rechecking fuse. when the fuse blows after plugging in a certain socket suspect that one to be bad and replace.
You have no power when the parking lamps are on. Do the front parking lamps work? If the front parking lamps work then you have an issue with the rear wiring. Use a test light to verify you do not have power at the sockets.