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My instrument panel, parking lights, and taillights flicker simultaneously. they are all ran off the 'park lamp relay' on my 2002 dodge dakota. my headlights are fine. the conflict is intermittent and sometimes occurs immediately after starting my vehicle, or sometimes i can drive an hour and not have one problem. but when they flicker its sometimes inconsistent and other times it flickers like a disco strobe. i can hear the relay clickin on/off everytime it flickers. and it only flickers when i have the parking lights or headlights on. any ideas??
Re: My instrument panel, parking lights, and taillights...
Relay coil may be a bit weak and is sharing power with the headlight relay. Try swapping the relay with the horn relay or another similar one that is non-essential to operation of the car. If that doesn't work, you may have a loose wire on the headlight switch or at the relay socket.
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As temporary fix, please unplug the battery from the car when you're leaving it for more than 15 minutes. This should stop it from being drained by your parking lights.
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Sounds like a [i]possible[/i] short in your wiring loom / harness.
Get an auto electrician to go through your wiring system.
From a first-hand incident, an unattended short [i]could[/i] result in burning wires / fire.
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 the PARK or HEADLAMP position, or anytime the headlights are requested. The PARK LPS fuse in the underhood junction block supplies battery positive voltage to the auto park lamp control relay switch contacts. The PARK LPS fuse in the underhood junction block also supplies battery positive voltage to the auto park lamp control relay coil. When the park lamps are turned on the body control module (BCM) energizes the auto park lamp control relay. Current flow is from the auto park lamp control relay to their respective park and marker lamps and to ground. Ground is provided at G101, G401
Just the back light's - tail lamps ,park lamps , sounds like a wiring problem or faulty connector . Viewing wiring diagrams an testing the electrical circuits is the way to find this problem . Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. year , make , model an engine size . Under system click on lighting ,then click on parking lamps under subsystem . Click the search button then the blue link's . Watch these videos an then test the electrical circuit for the rear park lamps . Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia
There is an issue, you have a dead short in the circuit, no quick fix for this. You must first get a wiring diagram of the entire circuit and then follow it until you locate the shorted wire or component.
That makes sense since the rear taillights and license plate lamps come from the same power source, which is different that the ones for the backup and brake lights. Here are two diagrams that show the electrical path for the lights from the battery/fusebox all the way to the lamps. Hope this helps!
In the instrument panel fuse block is a fuse marked PK LAMPS the fuse directly above is a 10 amp fuse ,this is the one you want to check. There is also a relay involved in making the park lights work and the Body control module .The relay is in the same fuse block as the PK LAMP fuse, marked PK LP . Not to sound like I'm talking down to you but do you know what a relay looks like ? The fuse block is Right side of the I/P, behind the access panel. Open the passenger door , at end of the Dash is a panel ,pull it off ,then you'll see fuse box .On the inside of the panel it tells what each fuse and relay is. I'm going add how the park lights work description.
The PARK LAMPS fuse in the instrument panel (I/P) fuse block applies battery positive voltage to both the coil and switch side of the PARK LAMP relay in the I/P fuse block. When the headlamp switch is placed in either the PARK or HEAD position, ground is applied from G202 to the headlamp switch. The headlamp switch then applies the ground through the park lamp switch ON signal circuit to the body control module (BCM). The BCM then applies a ground to the PARK LAMP relay enable circuit. This energizes the PARK LAMP relay, applying battery positive voltage to all the park, tail, marker and license lamps. The park, tail, marker and license lamps are also turned ON when the headlamps are commanded ON by the BCM for low light operation. Good luck !
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