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Check for battery voltage on the violet/white wire at the tail light socket. If no power at tail lights but you do have front parking lights, check at Splice #112 located near the radiator on passenger side
Daytime running lamps control module. Fuse #37 - inside the passenger compartment or under hood fuse box ? Do you know how to use a volt meter an wiring diagram to find electrical problems ? You have a direct short to ground or fuse #37 wouldn't blow. Underhood fuse box fuse # 37 is for the park lamps .Supply's B+ voltage to the daytime running lamps module an the headlamp switch plus 37
PARK LP Fuse
20A
Headlamp Switch, Body Control Module (BCM), and Vehicle Interface Unit (VIU)...
Park, Tail and Marker Lamps
The park, tail and marker lamps, including the license lamps, are turned ON when the headlamp switch is placed in either the PARK or HEADLAMP position, or anytime the headlights are requested. The PARK LP fuse in the underhood accessory wiring junction block. When the headlamp switch is placed in the PARK position, battery positive voltage is applied to the park lamp circuit. The parklamp circuit then applies battery positive voltage to the DRL control module and to all the marker, park and tail lamps. The front park lamps are grounded at G101. The rear park lamps are grounded at G302. The license plate lamps are a part of the rear park lamp circuit and are grounded at G302 The inadvertent power control feature prevents the park lights from remaining on more than 10 minutes if left ON. If the park lights are turned ON after the ignition switch has been turned OFF, or is in the ACCY position, they will remain ON until turned OFF or the battery runs dead.
2 potential answers from personal, NOT A MECHANIC, experience:
1. bad ignition switch
2. bad intake manifold gasket, will cause a cylinder to fill with antifreeze and lock up engine.
If it clicks when you turn key, probably not #1,
Good luck, and pray for #1, the other is very expensive to fix.
Are you sure they aren't the stoplights (brake lights)? There should be a stoplight switch connected to the brake pedal and replacing it would correct the problem. If it is the tail and parking lights, you must need a new switch that controls them.
Signed,
64 year old car guy.
If the driver's side tail light is working, it's not a fuse. Use a test light to check for power at the bulb holder. One terminal will be for tail light, the other for brake/turn light. If the is constant power for tail light, replace bulb. If no power, trace wiring from bulb holder to driver's side junction. Probable broken wire between the two tail lights.
turn off and on head lights liston for click under hood by your battery, that clicks your tail light relay. It has 4 wires in it. with head lights on 3 wires should be hot. if only 2 wires are hot replace relay.
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