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Old 04-17-2017, 12:43 PM   #2
gmachinz
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Join Date: Jun 2011
Location: Des Moines, IA.
Posts: 4,143
Re: 73-87 window switch issue and fix

1977 was the first year for power windows and locks.

1977-80 switches were all stainless and the window motors were self grounding.

1981-up switches were plastic and motors were reverse polarity.

There are several difference in the harnesses beyond just the switch difference but as for the switch style, this is what I've found.
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