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Defog switch 78

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Old Aug 21, 2009 | 03:44 PM
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vettemtl
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Default Defog switch 78

How do i know if i have to change the switch?
Thanks.
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Old Aug 21, 2009 | 04:10 PM
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Originally Posted by vettemtl
How do i know if i have to change the switch?
Thanks.
Are you wanting to diagnose why your rear defog doesn't work ?
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Old Aug 21, 2009 | 04:20 PM
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oh yes
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Old Aug 21, 2009 | 04:28 PM
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The orange at the relay must be hot all the time
the pink must be hot with the key in the on position
the black must be grounded
the purple must be hot when the key is on and the switch is pushed on
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