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Thread: rear defrost

  1. #1
    Join Date
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    rear defrost

    I just want to make sure my rear defrost works before winter.When you turn on the switch the tabs on the glass should all get power?I turned it on one morning didn't seem to work or does it take a while for it to heat up.

  2. #2
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    Quote Originally Posted by 5arnold View Post
    I just want to make sure my rear defrost works before winter.When you turn on the switch the tabs on the glass should all get power?I turned it on one morning didn't seem to work or does it take a while for it to heat up.
    takes about 3-4 minutes to notice anything
    4257 of 7839 03 300A- SOLD
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  3. #3
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    if you have a test light, turn the defrost on and put your test light on each line across the window, it should light up if theres power there

  4. #4
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    Can't test the lines on the window it has film over them.

  5. #5
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    Quote Originally Posted by 5arnold View Post
    Can't test the lines on the window it has film over them.

    I believe you can test the electrical connectors on the glass.
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  6. #6
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    Quote Originally Posted by jgc61sr2002 View Post
    I believe you can test the electrical connectors on the glass.
    Yes you can.
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  7. #7
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    Aug 2007
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    So California
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    like said above you have to run test light from the tabs on one side to the other. then you shoudl have some current.

  8. #8
    Join Date
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    If the defroster switch goes bad, do you have to get a whole new dot matrix panel?
    I just ordered a panel and it came with the defroster switch.
    2004 Trilogy #93P 12.2@113 Built and stalled

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