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Old 02-06-2018, 12:08 PM   #9
chevyguy_72
Vintage Evil
 
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Join Date: Aug 2005
Location: Broomfield, CO
Posts: 956
Re: 71 blazer heater/defrost box

Quote:
Originally Posted by hemi43 View Post
Like I mentioned before, most likely it had "heater delete" option.
Sorry but that doesn't make sense to me since it actually has heater ports on the bottom and sides? A delete to me would be no heater at all... maybe just a defrost unit... this still has both and a flapper inside to control between them with all 3 wires and the same controls as the other unit...
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