Gary Lewis Posted November 20, 2017 Share Posted November 20, 2017 Heat Shut-off: How to install a shut-off valve to make the Vent and Max A/C functions cooler. See the tab by that name on that page. Swapping Controls: How to change the early (1980 - 84) controls into a later (1985 - 86) truck, or vice versa. See the tab by that name on that page. Link to comment Share on other sites More sharing options...
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