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Need Brake Light Circuit Info - Bulb Failure Relay 700 1990

posted by  Chris Mullet on  Fri Jan 26 09:25 CST 2007
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last visit: Fri Oct 24 09:08 CST 2014
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I have no power down the yellow wire to the RH brake light. All other bulbs on the RH side work fine. The ground wire buzzes out good. The LH brake light works fine as do all the other LH lights. I see no damage to the wire bundle in the trunk area. I'm starting to suspect the bulb warning relay itself may be at fault. I don't have a good wiring diagram that identifies all the individual pin numbers on the relay. Does anyone know which relay sockets I would jumper to prove/disprove a bad relay?

Thank you.








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    Need Brake Light Circuit Info - Bulb Failure Relay 700 1990

    uid 18083's pic
    posted by  lucid on  Fri Jan 26 12:18 CST 2007
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    last visit: Fri Oct 24 12:31 CST 2014
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    Voltage in from brake switch is Y-BN wire, socket 9 (54S)

    Voltage out to left light is Y-R wire, socket 10 (54L)
    Voltage out to right light is Y wire, socket 11 (54R)
    --
    Bruce Young
    '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.








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      Need Brake Light Circuit Info - Bulb Failure Relay 700 1990

      posted by  Chris Mullet on  Fri Jan 26 12:35 CST 2007
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      Thanks, Bruce. That'll do it.

      Sign me "Too cheap to buy good wiring diagram".








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        Chris, if you DO need a bulb failure relay, do not buy one, 700 1990

        posted by  mr.zorak on  Fri Jan 26 17:55 CST 2007
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        Email me, I have 3 that I pulled from the salvage yard that should work. I will send you a couple if you need, that is if the one you need is the big red monster. They are just collecting dust in my garage.
        --
        93' 240 Classic Wagon 220K & 92' 740 Wagon Regina/Rex 90K








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          Chris, if you DO need a bulb failure relay, do not buy one, 700 1990

          posted by  Chris Mullet on  Sat Jan 27 11:58 CST 2007
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          last visit: Fri Oct 24 09:08 CST 2014
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          Pat,

          That's so cool of you. I came down with a bad cold/flu/creepy crud, and haven't gotten back to it again. But it's the wife's car so it won't be long. I'll let you know......







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