Brake light issues

Discussion in 'Road Safety Systems' started by salguod, Oct 14, 2007.

  1. salguod

    salguod New Member

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    Well, trip home from the seller with our 'new' PUP (1995 Jayco 1207 KB) and I've got my first challenge.

    The brake lights and turn signals on the PUP don't work when the TV headlights are on. Actually, the tail lights don't work either, come to think of it. All the marker lights work when the TV lights are on, but no tail lights, brake lights or turn signals.

    Brake lights and turn signals are fine if the TV lights are off. I drove the hour long drive home and as the sun set I was waiting to get pulled over for no lights. I figured no lights at dusk was better than no brake lights on the trailer. I made it home without incident.

    Any ideas on where to start on this?

    Thanks,

    salguod
    www.salguod.net

    1999 Honda Odyssey
    1995 Jayco 1207 KB

    Edited by - salguod on October 14 2007 00:36:56
     
  2. cmspence

    cmspence Member

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    1st-voltmeter is your best friend if you dont have one you should
    2nd-they sell a test plug that goes into your tv tow plug this would tell ya if the problem is in the tv or the camper
    3rd-if you popup is like mine the wiring is not protected that well i found alot of wiring that rubs against the frame(you might want to take a fast look at the wiring)
    4th-test light's lye dont trust them (example wire that has 12v and it is 3/4 of the way broke it will still have a bright light

    good luck
     
  3. barb_dave

    barb_dave Active Member

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    I would start at the TV check each pole of the connector and make sure you have voltage If you have power there then the problem is on the camper side. On our camper the brake lights didn't work the pole inside the connector on the camper side was not making contact, I moved it with a screwdriver and the lights have been fine since.
    You may also want to check the ground for the light. Make a lead and ground the bulb socket to the frame. if the light works its a ground problem.
    The last thing I can think of is remove the bulbs and check for corrosion in the socket. While taking the bulbs out wouldn't hurt to just replace the bulbs.
    These are just the easiest things I can think of which might help

    I use to have a life but my job ate it.
    http://community.webshots.com/user/Barb_Dave
    1998 Coleman Mesa

    Edited by - barb_dave on October 14 2007 17:31:58
     
  4. Bummer72

    Bummer72 Lancaster, PA

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    It looks like you have the challenge of chasing down a bad ground ahead of you. Good news is, once you find it, it should be easy to fix; bad news--it could be anywhere. From what it sounds like, the poor ground might be in the turn-signal circuit, and it could be using the running light circuit as a ground, until you turn on the headlights of your TV. Then, I'd be all he// breaks loose, right? I'd bet that if you looked closely, the brake/turn signal filaments would be glowing dimly when your TV running lights are on. Not enough to blow a fuse, but enough to make some really odd things happen.

    Cmspence is absolutely right about his 4th point. The little plug in tester you hook up to you TV harness, draws hardly any amperage. If there is a poor ground on your TV, it might be just good enough to make the test light work properly, but when you hook up your camper, you get wacky results. Check the grounds on your TV as well as your PUP...DAMHIK!!!

    Best way to be 100% sure of your electrical system is to know where everything is/should be grounded, and check those ground points. A little bit of sanding, maybe a some dielectric grease and a new crimp on terminal ring, and you should be good to go. Poor grounds are the devil<img src=../Images/icons/icon_smile_evil.gif border=0 align=middle alt="Evil"> to chase down, but usually easily fixed.

    Let us know how you make out!!!

    Doug Rice, Lancaster PA
    <img src=../Images/flags/us.gif border=0 align=middle alt="United States"><img src=../Images/flags/us-coastguard.jpg border=0 align=middle alt="US Coast Guard"> Currently stationed at U.S. Coast Guard LORAN Station Attu, Alaska
    Me, CPO, USCG
    DW Heather, M.Div.
    DS Andrew
    DS Benjamin
    <img src=../Images/icons/icon_smile_pu.gif border=0 align=middle alt="PopUp">1985 Jayco J Series
    <img src=../Images/icons/icon_smile_suv.gif border=0 align=middle alt="Tow Vehicle"> 1987 Volvo 240 DL Wagon

    Edited by - Bummer72 on October 14 2007 17:07:33
     
  5. salguod

    salguod New Member

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    Thanks all.

    First thing, the TV was borrowed (no hitch on our van yet) so that will change. All the hitch wiring on my van will be new, so hopefully that won't be an issue. Maybe it'll fix itself when we hook up to our van. :D

    Second thing, one of the tail lights is missing the cover, so the bulb is exposed to the elements. The snap tab on the other is broken, meaning it's only a matter of time before the other cover goes away too. So the first thing I'm going to do is get new tail lights. If the different TV doesn't solve it, that may.

    It's going into storage for the winter soon, so that may all wait for spring. I'll try to remember to post the answer then. :D

    BTW - My post was moved from electrical to safety & security systems. I get why, and that's fine, but on other forums I've gotten a notice when that happens. It took a while of searching to find it again. Is there a way to get noties when topics are moved?

    salguod
    www.salguod.net

    1999 Honda Odyssey
    1995 Jayco 1207 KB
     

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