Thread: 1991 W126 rear defrost defogger switch question
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Old 01-01-2012, 01:54 PM
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sixto sixto is online now
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Join Date: Jun 2000
Location: Eastern TN
Posts: 20,843
Yes. The relay sets the defroster for 30 minutes and powers the bulb in the switch. Do you know if the defroster is powered even if the bulb doesn't light? Maybe it's just a bad bulb contact at the switch.

Sixto
87 300D
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