Parking lights come on when applying brakes

[mperry]

I have a 2002 Newmar Dutch Star on Spartan Chassis. Just started having a problem that when I apply the brakes, the brake lights illuminate and the parking lights illuminate on the front and rear. I also get a steady beep from the turn signal beeper. (I am sure that is not the proper name for it) It will do this with the ignition in the off position also. The brake lights have there own bulb, separate from the parking lights. All of the lights work as they should until you apply the brakes. Any help would be greatly appreciated.

[Rsponsford]

Has any work been done recently to the electrical trailer connector? Either way, check for a short in the wiring there at the bumper plug. There may be some corrosion shorting two circuits together. The older plugs had a metal hosing instead of plastic and would also short out more easily with age.

[mperry]

Nothing has been done to it. It has a 4 prong connector that connects to the round plug. I disconnected it earlier and nothing changed. I will check further though. Thank You

[LETMGROW]

Try turning the turn signals on to one side. When the signal lamp is flashing do the parking lamps flash also? If not, turn the signals to the other side. Do the parking lamps flash now?
If the parking lamps illuminate with the turn signals on either side you have a grounding problem in the rear light assembly on that side, a corroded bulb or lamp socket.
This is true only if the brake lamps and signal lamps are using the same bulb to light and the same light is also a parking or running lamp.
Post a picture of your rear lamp(s) to give us more to work from.
I am working under the assumption you have already eliminated the trailer plug wiring.
If your turn signal flasher is clicking you are getting a voltage feed back from somewhere. I wouldn't suspect the turn signal switch just yet but it is a remote possibility.
Lynn

[Dtwallace]

Originally Posted by LETMGROW

Try turning the turn signals on to one side. When the signal lamp is flashing do the parking lamps flash also? If not, turn the signals to the other side. Do the parking lamps flash now?
If the parking lamps illuminate with the turn signals on either side you have a grounding problem in the rear light assembly on that side, a corroded bulb or lamp socket.
This is true only if the brake lamps and signal lamps are using the same bulb to light and the same light is also a parking or running lamp.
Post a picture of your rear lamp(s) to give us more to work from.
I am working under the assumption you have already eliminated the trailer plug wiring.
If your turn signal flasher is clicking you are getting a voltage feed back from somewhere. I wouldn't suspect the turn signal switch just yet but it is a remote possibility.
Lynn

I had a similar issue on an older model GM car once, it turned out to be the turn signal switch, but like posted above, try the other diagnostic techniques first.

DTW

[gseason]

Don't forget to check all of your grounds. I had a similar prob and found one of the taillight grounds wasn't making a good connection.

[mperry]

There is three separate bulbs and lens on each side in the rear. Brake, turn and backup. I will get a picture tomorrow. I have checked the trailer plug but I will check again also. I don't hear anything from the turn signal flasher but it would be hard to hear over the beeper that beeps when the turn signal is activated. That is the same beeper that is making the continuous beep when the brakes are applied. Thanks for helping.

[speed racer]

If you would check your tail light bulbs you will find that one is either installed backwards or the element has come loose and shorted against the tail light element. Thses bulb have two elements one for tail lights and one for brake lights.

[Rocky Larson]

If you have recently replaced any, no matter how far removed, bulbs ,especially if they are the blade type LED, try putting back the original bulb. All my problems at the toad and rear lights were solved by returning to OEM after having tried LED front turn signals and
an LED compatible blinker module.
Just another example of how I haven't learned "if it ain't broke, don't fix it"

[mperry]

Originally Posted by speed racer

If you would check your tail light bulbs you will find that one is either installed backwards or the element has come loose and shorted against the tail light element. Thses bulb have two elements one for tail lights and one for brake lights.

I tried removing the brake light bulbs but it did not make any difference. With no bulbs in the brake lights, the parking lights in the front still illuminate and i still get the turn signal beep when the brake is applied. The beep is continuous not intermittent as it would be with the blinker. I hope that I am explaining that right. Do you think it could be one of the other bulbs? Thank You for trying to help.

[mperry]

Originally Posted by Rocky Larson

If you have recently replaced any, no matter how far removed, bulbs ,especially if they are the blade type LED, try putting back the original bulb. All my problems at the toad and rear lights were solved by returning to OEM after having tried LED front turn signals and
an LED compatible blinker module.
Just another example of how I haven't learned "if it ain't broke, don't fix it"

I have not replaced any bulbs but I do understand. I have learned some lessons the hard way also. I am usually pretty good at fixing things but this has me stumped. It will probably be something very simple once its found. Just have to find it. LOL Thanks for helping.

[hypoxia]

Originally Posted by gseason

check all of your grounds

[LETMGROW]

You said you had 3 lights on each side. Are 2 of the lenses red and 1 red with a white center for back up lights? Or is there a red lens, an amber lens and the back up lamp lens?
Lynn

[mperry]

Originally Posted by LETMGROW

You said you had 3 lights on each side. Are 2 of the lenses red and 1 red with a white center for back up lights? Or is there a red lens, an amber lens and the back up lamp lens?
Lynn

From top down, amber, red and clear on bottom