Murphy Posted June 18, 2016 Share Posted June 18, 2016 As I continue my quest to convert idiot lights to gauges, I've found another oddity? I replaced the temp sensor with the single-wire sensor that came with the kit from Sonnie. My original brass sensor has 2 wires to it, DG (dark green) as expected and a DG w/white stripe? My manual shows nothing like that in the electrical diagrams. This is a 71, SBC350 with AC. The DG goes to where it should in the firewall connector and to the dash harness connector. The DG/white goes across the firewall in a wrapped cable bundle. All looks factory & untouched, think I'll keep investigating. My car was produced in May of 71. THX! Quote Link to comment Share on other sites More sharing options...
stangeba Posted June 18, 2016 Share Posted June 18, 2016 When I converted my gauge package, from a donor 71 350, the right (passenger side) head also had a sensor with ? (1 or 2, don't remember) and my left head went to a single wire. I believe the extra wire was for the TCS system. Neither car had A/C. Best picture I have Quote Link to comment Share on other sites More sharing options...
RealRed70 Posted July 6, 2016 Share Posted July 6, 2016 Idiot light s used a different sending unit than full gauge cars. You need to use the style that Sonnie24 gave you. Quote Link to comment Share on other sites More sharing options...
Murphy Posted July 7, 2016 Author Share Posted July 7, 2016 Of course, I changed the block sensor but the 2nd wire baffled me. I just didn't use it and all is fine........... Quote Link to comment Share on other sites More sharing options...
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