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Trailer light wiring 900 1993

posted by  someone claiming to be Brad in VA on  Fri Apr 23 16:11 CST 2004 [RELATED]

I had a local trailer supply shop install a Drawtite hitch & wiring some time ago, but just tried for the first time. I recently bought a trailer & found that there is a problem with the wiring on the car (I tried another known good trailer). The shop installed a Drawtite Modulite 18187 power module converter. IPD says that's the correct module to use. The shop says that the box may have gone bad & they will fix it. I'm affraid that they don't know their way around a Volvo & may make it worse. Is there something thats different about 93 945 that I can clue them in on?








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    Trailer light wiring 900 1993

    posted by  sped on  Fri Apr 23 23:08 CST 2004
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    Hi Brad, That is the right module. What are the problems? Maybe I can help.








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      Trailer light wiring 900 1993

      posted by  someone claiming to be Brad in VA on  Sat Apr 24 01:32 CST 2004 [RELATED]

      With the headlights on, when the turn signal is used, all lights flash. When I say "all lights" I mean both sides, front running lights & tail lights on the trailer. With the headlights off, lights on the trailer work correctly. Thanks for any help you can give.








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        Trailer light wiring 900 1993

        posted by  mapleleafer on  Sat Apr 24 12:12 CST 2004
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        last visit: Wed Oct 9 00:36 CST 2013
        [RELATED]

        Does the problem happen with both left & right directionals? How about the parking lights (when they're off) when you apply the brake? It sounds a lot like a bad ground either between the car and traler, or at one of the trailer lights. The two questions were to help zero in on where to look first.








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          Trailer light wiring 900 1993

          posted by  someone claiming to be Brad in VA on  Sun Apr 25 01:42 CST 2004 [RELATED]

          All things are as they should be untill the headlights are on. All 4 lights flash when a turn signal is used, & the taillights go dim when brakes are applied. During daylight the lights work perfectly.







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