Crazy parking lights issue

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Jun 5, 2013 | 03:03 PM

id_birdhntr

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Crazy parking lights issue

The parking lights on my 2001 7.3 stay on if I turn the light switch off just as I turn off the truck and will not go out. If I turn the lights off 30 seconds or more before I turn the truck off they will go off. I noticed this weekend when I was pulling my boat that when I turned the lights off while continuing to drive that the running lights would stay on for a few minutes after I turned the switch off and then eventually turn off. If I turn the lights on and off again without the truck running the parking lights will stay on indefinatly. I can then get in my truck, start it, drive around for a minute or so and then they will turn off. If I just start the truck and leave it idling the lights will stay on.

I assume that with higher RPM's more voltage is going through the system which allows for the lights to eventually go out but without the additional voltage they stay on. Any suggestions as this one has me scratching my head?

Jun 5, 2013 | 10:19 PM

Bonanza35

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Joined: Sep 2005

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From: Norco,CA

Do you have any other wiring mods done? Never heard of that one. A guess would be the switch itself, but you think it would do it all the time.

Jun 5, 2013 | 10:43 PM

fordtruck661

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Joined: Aug 2011

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Do you have a alarm system that is hooked up to the parking lights?

Maybe you have a bad ground somewhere?

Jun 5, 2013 | 10:57 PM

id_birdhntr

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No wiring mod's or alarm but I had a 7 pin added 11 years ago to the bed for a fifth wheel. I have checked the ground at the back on the frame but I'm still thinking it has to be a ground or possibly a parking light relay? I had the GEM pulled out and no visible issues with it. What makes me think it's a relay is that the lights will eventually go out if I keep driving and maintain the higher RPM's. I can leave it running in the driveway and the lights never go out. The truck was manufactured in Canada so it has the daytime running lights. Not sure if there is anything associated with that.