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Old 03-15-2009, 09:43 AM   #1
Green Monster
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Join Date: Mar 2006
Location: Malvern, PA
Posts: 710
Question Need help with wiring stock temperature and vacuum gauges


I would like some help on how to wire stock temperature gauge and vacuum gauge. The previous owner installed a SunPro temperature gauge where the stock gauge should be. I want to convert this back to stock and I figured while I'm spending the money and time doing this, I might at well upgrade the cluster to house a vacuum gauge.

  1. Do I need to look for existing wires or install new ones to get the stock temp gauge to work?
  2. What do I need to do to get my vacuum gauge to work?

This is the gauge that is currently in the truck.

This is temperature wire coming through the firewall.

This is the wire going into the, sending unit (correct me if I'm wrong). See very center of photograph with the white teflon threads?.

I have all the stock gauges and will repaint the needles. On order through I have the vacuum gauge setup (VG101 pictured below). This includes a new bezel, lens (with vac), and black faceplate (with vac).

1972 K/5 Blazer CST
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