Quote:
Originally Posted by MattyBs71
Bringing this thread back just to ask....so factory full gauge equipped trucks have the Temp warning light in the fuel gauge but never actually lit up or were connected to anything? Doesn't this drive anyone else crazy? Why even have it there??? The Brake warn light illuminates upon cranking the starter but Temp one never does. It never has in any 67-72 truck I've driven. So that's just the way it is?
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Yes, the temp warning light is present but not wired up to be functional in trucks with the factory gauge cluster.
The only reason it's even there is because both the warning light & gauge clusters make use of the same fuel gauge assembly (which includes the little red plastic lens / filter for the temp warning light).
On a related side note, the fuel gauge assemblies used in many of the larger medium duty trucks have "tandem lock" and "overspeed" or "low vacuum" warning lights instead of the "brake" and "temp" lights.